People of the MusEDLab: Yilu Guo

Yilu Guo


f. yilu.guo

Currently a Staff/faculty



 What project are you currently working on?

MusEDLab International Expansion Plan; Meditation Album “In the Bamboo Forest”

What do you like about working at MusEDLab? 


Self-directory working environment; Everybody here is being really supportive to each other; Never stop exploring new things; You will always get inspired.

What excites about music education and technology?

How to design project-based interdisciplinary music education by leveraging the new tech?

Your current favorite song?

“La Vie En Rose” by Melody Gardot

People of the MusEDLab: Martin Urbach

Martin Urbach


f. Martin Urbach

t. @mrmartinisays



What project are you currently working on?

I am working on creating a comprehensive curriculum that is informed by critical pedagogy, informal music learning, social justice activism, youth development, anti racist practices and adaptive technology for learners of all abilities.

What do you like about working at MusEDLab? 


The people are mighty brilliant, amazing, giving, warm and funny.

What excites about music education and technology?

We are in fertile ground to revitalize that which is stagnant, revive that which is dead and heal that which is broken in music education. We have the tools and we have the people and we have the technology AND we have the students. Now we just have to do it, together.

Your current favorite song?

“Freedom” by Beyonce ft. Kendrick Lamar

People of the MusEDLab: Sumanth Srinivasan

Sumanth Srinivasan


t. @reckoner165




What project are you currently working on?

I’m currently working on a physical game that personifies internet protocols into Kafkaesque role playing.

What did you like about working at MusEDLab? 

A very friendly atmosphere and freedom to pick and choose the work I can commit to. Also leeway to learn on the job.

What excites about music education and technology? 

I learnt music informally and almost exclusively via internet and computers. I see it has come a long way. I’m always excited to give back to this community.

What advice would you give to prospective students at MusEDLab?

Pick a field you don’t know too well and feel your way through it. It’s very gratifying.

Your current favorite song?

Soon by My Bloody Valentine

People of the MusEDLab: Sunny Choi

Sunny Choi


f. sunnychoimusic

t. @thesunnychoi

Currently a Student




What project are you currently working on?

I’m currently working on developing an online music course in partnership with Soundfly, where I take

the course subscribers through my creative process for reinterpreting songs from today’s latest popular music as solo piano music.

As an active member of MusEDLab all throughout the summer, I’m on the committee team to prepare for the launch of our annually-hosted IMPACT Conference that’s to be held from August 1-5. Our conference theme this year is on music experience design for education, health, interactive media and social impact.

I’m also active as Steinway & Son’s popular music recording artist for Spirio pianos, providing my uniquely interpreted solo piano music on today’s popular music

What do you like about working at MusEDLab? 

I consider MusEDLab as my “safe space”, where I feel entirely free to explore all of my curiosities that are related to music. Music is not just some abstract subject that is to remain exclusive amongst certain individuals, but a powerful path that contributes to the development of one’s being. At the lab, I invest time in getting to know cool people that are doing innovative things with music. Some of these people may include educators that are embedding technology in their classrooms, physicians that are interested in connecting the brain activity of music with medicine, and technology companies that passionately care for developing tools for music learning for people in the 21st century. The definition of music is rapidly changing with the evolvement in technology, and it could not be a more exciting period than now to research and explore how music is experienced today.

Your current favorite song?

“Brand New” Day by Hiromi


People of the MusEDLab: Ethan Hein

Ethan Hein


t. @ethanhein

Currently a Student



What project are you currently working on?

All things Groove Pizza and aQWERTYon, creative music making curriculum, Soundfly

What do you like about working at MusEDLab? 

Getting to realize some longstanding dreams about creating great music making and learning tools.

What excites about music education and technology? 

My most meaningful music education has come about through creative experimentation with software and it’s an experience I’m eager to share with more people.

Your current favorite song?

“Cranes In The Sky” by Solange.

Groove challenges with the Groove Pizza

One of our key design principles at the NYU MusEDLab is not to confront beginners with a blank canvas. We want to introduce people to our tools by giving them specific, real-world music to play around with. That was the motivation behind creating presets for the aQWERTYon, and a similar impulse informs Ableton’s approach to their online music tutorials. The Groove Pizza comes with some preset patterns (specials), but there aren’t direct prompts for creative beatmaking. This post introduces some prototype prompts.

Groove Pizza logo

The Funky Drummer boom-bap challenge

The pattern below is the first quarter note of the kick and snare pattern in Clyde Stubblefield’s classic drum break. Fill in the missing kick and snare hits to make your own golden age breakbeat. Try removing some hi-hats as well.

Musical inspiration:

The Levee break asymmetrical kick challenge

The groove below uses the kick and snare pattern from “When The Levee Breaks” by Led Zeppelin. Add hi-hats and customize the kick and snare to best convey the Awesome Majesty of Rock.

Musical inspiration:

Four-on-the-floor squares challenge

These two squares make a classic dance beat, kicks on the quarter notes with hi-hats in between. Add snares and break up the symmetry to make a dance floor filler.

Musical inspiration:

So Fresh So Clean challenge

The pattern below is the basis for a sixteenth note hip-hop groove. Place more kicks and snares to make a crunk Dirty South beat in the spirit of OutKast.

Musical inspiration:

It’s A Trap challenge

The pattern below is the basis for a thirty-second note groove. Add kicks and snares and remove hi-hats to make a radio-friendly trap beat.

Musical inspiration: I would include a link to a Future song but can’t find one that whose lyrics aren’t extremely objectionable. Just turn on the radio.

Careless Whisper

 The infamous saxophone riff in “Careless Whisper” is one of the most infectious earworms in musical history. Love it or hate it, there is no getting it out of your head. In honor of the late George Michael, let’s take a look at what makes it work.

Play the riff yourself using your computer keyboard!

Press these keys to get the riff:Careless Whisper aQW score
So why is the riff so impossible to forget? Its melodic structure certainly jumps right out at you. The first three phrases are descending lines spelling out chords using similar rhythms. The fourth phrase is an ascending line running up a scale, using a very different rhythm.

First let’s take a closer look at those rhythms. The first three phrases are heavily syncopated. After the downbeats, every single note in each pattern falls on a weak beat. The fourth phrase is less syncopated; it’s a predictable pattern of eighth notes. But because your ear has become used to the pattern of the first three phrases, the straighter rhythm in the fourth one feels more “syncopated” because it defies your expectation.

Now let’s consider the harmonic content. The left diagram below shows the D natural minor scale on the chromatic circle. The right diagram shows it on the circle of fifths. Scale tones have a white background, while non-scale tones are greyed out.

Three of the four phrases in the “Careless Whisper” riff are arpeggios, the notes from a chord played one at a time. Here’s how you make the chords.

  • Take the D natural minor scale. Start on the root (D). Skip the second (E) and land on the third (F). Skip the fourth (G) and land on the fifth (A). Skip the sixth (B-flat) and land on the seventh (C). Finally, skip the root (D) and land on the ninth (E). These pitches – D, F, A, C, and E – make a D minor 9 (Dm9) chord. Now look at the first bar of the sax riff. All the pitches in D minor 9 are there except for C.
  • If you do the same process, but starting on G, you get the pitches G, B-flat, D, F, A, C, which make up a G minor 11 chord. The second phrase has most of those pitches.
  • Do the same process starting on B-flat, and you get B-flat, D, F, and A, making a B-flat major 7 (B♭maj7) chord. The third phrase has all of these pitches.

Careless Whisper D natural minor scale chords

The fourth phrase is different from the others. Rather than outlining an arpeggio, it runs up the D natural minor scale from A to A. This sequence of pitches (A, B-flat, C, D, E, F, G, A) is also known as the A Phrygian mode. The half-step interval between A and B-flat gives Phrygian its exotic quality.

This riff certainly is catchy. It’s also notoriously corny, and to many people’s ears, quite annoying. Why? Some of it is the timbre. The use of unrestrainedly passionate alto sax through heavy reverb was briefly in vogue in the 1980s, and then fell permanently out of style. To my ears, though, the real problem is the chord progression. In D minor, both Gm11 and B♭maj7 are subdominants, and functionally they’re interchangeable. Jazz musicians like me hear them as being essentially the same chord. It would be hipper to replace the Gm with G7, or the B♭maj7 with B♭7. The A minor in the last bar is weak too; it would be more satisfying to replace the C with C-sharp, to make D harmonic minor. But your mileage may vary.

Enjoy my mashup of this track with “Calabria 2007” by Enur featuring Natasja.

Freedom ’90

Since George Michael died, I’ve been enjoying all of his hits, but none of them more than this one. Listening to it now, it’s painfully obvious how much it’s about George Michael’s struggles with his sexual orientation. I wonder whether he was being deliberately coy in the lyrics, or if he just wasn’t yet fully in touch with his identity. Being gay in the eighties must have been a nightmare.

This is the funkiest song that George Michael ever wrote, which is saying something. Was he the funkiest white British guy in history? Quite possibly. 

The beat

There are five layers to the drum pattern: a simple closed hi-hat from a drum machine, some programmed bongos and congas, a sampled tambourine playing lightly swung sixteenth notes, and finally, once the full groove kicks in, the good old Funky Drummer break. I include a Noteflight transcription of all that stuff below, but don’t listen to it, it sounds comically awful.

George Michael uses the Funky Drummer break on at least two of the songs on Listen Without Prejudice Vol 1. Hear him discuss the break and how it informed his writing process in this must-watch 1990 documentary.

The intro and choruses

Harmonically, this is a boilerplate C Mixolydian progression: the chords built on the first, seventh and fourth degrees of the scale. You can hear the same progression in uncountably many classic rock songs.

C Mixolydian chords

For a more detailed explanation of this scale and others like it, check out Theory For Producers.

The rhythm is what makes this groove so fresh. It’s an Afro-Cuban pattern full of syncopation and hemiola. Here’s an abstraction of it on the Groove Pizza. If you know the correct name of this rhythm, please tell me in the comments!

The verses

There’s a switch to plain vanilla C major, the chords built on the fifth, fourth and root of the scale.

C major chords

Like the chorus, this is standard issue pop/rock harmonically speaking, but it also gets its life from a funky Latin rhythm. It’s a kind of clave pattern, five hits spread more or less evenly across the sixteen sixteenth notes in the bar. Here it is on the Groove Pizza.

The prechorus and bridge

This section unexpectedly jumps over to C minor, and now things get harmonically interesting. The chords are built around a descending chromatic bassline: C, B, B-flat, A. It’s a simple idea but with complicated implications, because it implies four chords built on three different scales between them. First, we have the tonic triad in C natural minor, no big deal there. Next comes the V chord in C harmonic minor. Then we’re back to C natural minor, but with the seventh in the bass. Finally, we go to the IV chord in C Dorian mode. Really, all that we’re doing is stretching C natural minor to accommodate a couple of new notes, B natural in the second chord, and A natural in the fourth one.

C minor - descending chromatic bassline

The rhythm here is similar but not identical to the clave-like pattern in the verse–the final chord stab is a sixteenth note earlier. See and hear it on the Groove Pizza.

I don’t have the time to transcribe the whole bassline, but it’s absurdly tight and soulful. The album credits list bass played both by Deon Estus and by George Michael himself. Whichever one of them laid this down, they nailed it.

Song structure

“Freedom ’90” has an exceedingly peculiar structure for a mainstream pop song. The first chorus doesn’t hit until almost two minutes in, which is an eternity–most pop songs are practically over that that point. The graphic below shows the song segments as I marked them in Ableton.

Freedom '90 structure

The song begins with a four bar instrumental intro, nothing remarkable about that. But then it immediately moves into an eight bar section that I have trouble classifying. It’s the spot that would normally be occupied by verse one, but this part uses the chorus harmony and is different from the other verses. I labeled it “intro verse” for lack of a better term. (Update: upon listening again, I realized that this section is the backing vocals from the back half of the chorus. Clever, George Michael!) Then there’s an eight bar instrumental break, before the song has really even started. George Michael brings you on board with this unconventional sequence because it’s all so catchy, but it’s definitely strange.

Finally, twenty bars in, the song settles into a more traditional verse-prechorus-chorus loop. The verses are long, sixteen bars. The prechorus is eight bars, and the chorus is sixteen. You could think of the chorus as being two eight bar sections, the part that goes “All we have to do…” and the part that goes “Freedom…” but I hear it as all one big section.

After two verse-prechorus-chorus units, there’s a four bar breakdown on the prechorus chord progression. This leads into sixteen bar bridge, still following the prechorus form. Finally, the song ends with a climactic third chorus, which repeats and fades out as an outtro. All told, the song is over six minutes. That’s enough time (and musical information) for two songs by a lesser artist.

A word about dynamics: just from looking at the audio waveform, you can see that “Freedom ’90” has very little contrast in loudness and fullness over its duration. It starts sparse, but once the Funky Drummer loop kicks in at measure 13, the sound stays constantly big and full until the breakdown and bridge. These sections are a little emptier without the busy piano part. The final chorus is a little bigger than the rest of the song because there are more vocals layered in, but that still isn’t a lot of contrast. I guess George Michael decided that the groove was so hot, why mess with it by introducing contrast for the sake of contrast? He was right to feel that way.

Affordances and Constraints

Note-taking for User Experience Design with June Ahn

Don Norman discusses affordances and constraints in The Design of Everyday Things, Chapter Four: Knowing What To Do.

Don Norman - The Design of Everyday Things

User experience design is easy in situations where there’s only one thing that the user can possibly do. But as the possibilities multiply, so do the challenges. We can deal with new things using information from our prior experiences, or by being instructed. The best-designed things include the instructions for their own use, like video games whose first level act as tutorials, or doors with handles that communicate how you should operate them by their shape and placement.

We use affordances and constraints to learn how things work. Affordances suggest the range of possibilities, and constraints limit the alternatives. Constraints include:

  • Physical limitations. Door keys can only be inserted into keyholes vertically, but you can still insert the key upside down. Car keys work in both orientations.
  • Semantic constraints. We know that red lights mean stop and green lights mean go, so we infer that a red light means a device is off or inoperative, and a green light means it’s on or ready to function. We have a slow cooker that uses lights in the opposite way and it screws me up every time.
  • Cultural constraints. Otherwise known as conventions. (Not sure how these are different from semantic constraints.) Somehow we all know without being told that we’re supposed to face forward in the elevator. Google Glass was an epic failure because its early adopters ran into the cultural constraint of people not liking to be photographed without consent.
  • Logical constraints. The arrangement of knobs controlling your stove burners should match the arrangement of the burners themselves.

The absence of constraints makes things confusing. Norman gives examples of how much designers love rows of identical switches which give no clues as to their function. Distinguishing the switches by shape, size, or grouping might not look as elegant, but would make it easier to remember which one does what thing.

Helpful designs use visibility (making the relevant parts visible) and feedback (giving actions an immediate and obvious effect.) Everyone hates the power buttons on iMacs because they’re hidden on the back, flush with the case. Feedback is an important way to help us distinguish the functional parts from the decorative ones. Propellerheads Reason is an annoying program because its skeuomorphic design puts as many decorative elements on the screen as functional ones. Ableton Live is easier to use because everything on the screen is functional.

When you can’t make things visible, you can give feedback via sound. Pressing a Mac’s power button doesn’t immediately cause the screen to light up, but that’s okay, because it plays the famous startup sound. Norman’s examples of low-tech sound feedback include the “zzz” sound of a functioning zipper, a tea kettle’s whistle, and the various sounds that machines make when they have mechanical problems. The problem with sound as feedback is that it can be intrusive and annoying.

The term “affordance” is the source for a lot of confusion. Norman tries to clarify it in his article “Affordance, Conventions and Design.” He makes a distinction between real and perceived affordances. Anything that appears on a computer screen is a perceived affordance. The real affordances of a computer are its physical components: the screen itself, the keyboard, the trackpad. The MusEDLab was motivated to create the aQWERTYon by considering the computer’s real affordances for music making. Most software design ignores the real affordances and only considers the perceived ones.

Designers of graphical user interfaces rely entirely on conceptual models and cultural conventions. (Consider how many programs use a graphic of a floppy disk as a Save icon, and now compare to the last time you saw an actual floppy disk.) For Norman, graphics are perceived affordances by definition.

Joanna McGrenere and Wayne Ho try to nail the concept down harder in “Affordances: Clarifying and Evolving a Concept.” The term was coined by the perceptual psychologist James J. Gibson in his book The Ecological Approach to Visual Perception. For Gibson, affordances exist independent of the actor’s ability to perceive them, and don’t depend on the actor’s experiences and culture. For Norman, affordances can include both perceived and actual properties, which to me makes more sense. If you can’t figure out that an affordance exists, then what does it matter if it exists or not?

Norman collapses two distinct aspects of design: an object’s utility of an object and the way that users learn or discover that utility. But are designing affordances and designing the information about the affordances the same thing? McGrenere and Ho say no, that it’s the difference between usefulness versus usability. They complain that the HCI community has focused on usability at the expense of usefulness. Norman says that a scrollbar is a learned convention, not a real affordance. McGrenere and Ho disagree, because the scrollbar affords scrolling in a way that’s built into the software, making it every bit as much a real affordance as if it were a physical thing. The learned convention is the visual representation of the scrollbar, not the basic fact of it.

The best reason to distinguish affordances from their communication or representation is that sometimes the communication gets in the way of the affordance itself. For example, novice software users need graphical user interfaces, while advanced users prefer text commands and keyboard shortcuts. A beginner needs to see all the available commands, while a pro prefers to keep the screen free of unnecessary clutter. Ableton Live is a notoriously beginner-unfriendly program because it prioritizes visual economy and minimalism over user handholding. A number of basic functions are either invisible or so tiny as to be effectively invisible. Apple’s GarageBand welcomes beginners with photorealistic depictions of everything, but its lack of keyboard shortcuts makes it feel like wearing oven mitts for expert users. For McGrenere and Ho, the same feature of one of these programs can be an affordance or anti-affordance depending on the user.

Deconstructing the bassline in Herbie Hancock’s “Chameleon”

If you have even a passing interest in funk, you will want to familiarize yourself with Herbie Hancock’s “Chameleon.” And if you are preoccupied and dedicated to the preservation of the movement of the hips, then the bassline needs to be a cornerstone of your practice.

Chameleon - circular bass

Here’s a transcription I did in Noteflight – huge props to them for recently introducing sixteenth note swing.

And here’s how it looks in the MIDI piano roll:

The “Chameleon” bassline packs an incredible amount of music into just two bars. To understand how it’s put together, it’s helpful to take a look at the scale that Herbie built the tune around, the B-flat Dorian mode. Click the image below to play it on the aQWERTYon. I recommend doing some jamming with it over the song before you move on.

B-flat Dorian

Fun fact: this scale contains the same pitches as A-flat major. If you find that fact confusing, then feel free to ignore it. You can learn more about scales and modes in my Soundfly course.

The chord progression

The opening section of “Chameleon” is an endless loop of two chords, B♭-7 and E♭7. You build both of them using the notes in B-flat Dorian. To make B♭-7, start on the root of the scale, B-flat. Skip over the second scale degree to land on the third, D-flat. Skip over the fourth scale degree to land on the fifth, F. Then skip over the sixth to land on the seventh, A-flat. If you want to add extensions to the chord, just keep skipping scale degrees, like so:

B-flat Dorian mode chords

To make E♭7, you’re going to use the same seven pitches in the same order, but you’re going to treat E-flat as home base rather than B-flat. You could think of this new scale as being E-flat Mixolydian, or B-flat Dorian starting on E-flat; they’re perfectly interchangeable. Click to play E-flat Mixolydian on the aQWERTYon. You build your E♭7 chord like so:

B-flat Dorian mode chords on E-flat

Once you’ve got the sound of B♭-7 and E♭7 in your head, let’s try an extremely simplified version of the bassline.

Chord roots only

At the most basic level, the “Chameleon” bassline exists to spell out the chord progression in a rhythmically interesting way. (This is what all basslines do.) Here’s a version of the bassline that removes all of the notes except the ones on the first beat of each bar. They play the roots of the chords, B-flat and E-flat.

That’s boring, but effective. You can never go wrong playing chord roots on the downbeat.

Simple arpeggios

Next, we’ll hear a bassline that plays all of the notes in B♭-7 and E♭7 one at a time. When you play chords in this way, they’re called arpeggios.

The actual arpeggios

The real “Chameleon” bassline plays partial arpeggios–they don’t have all of the notes from each chord. Also, the rhythm is a complicated and interesting one.

Below, you can explore the rhythm in the Groove Pizza. The orange triangle shows the rhythm of the arpeggio notes, played on the snare. The yellow quadrilateral shows the rhythm of the walkups, played on the kick–we’ll get to those below.

The snare rhythm has a hit every three sixteenth notes. It’s a figure known in Afro-Latin music as tresillo, which you hear absolutely everywhere in all styles of American popular and vernacular music. Tresillo also forms the front half of the equally ubiquitous son clave. (By the way, you can also use the Groove Pizza to experiment with the “Chameleon” drum pattern.)

As for the pitches: Instead of going root-third-fifth-seventh, the bassline plays partial arpeggios. The figure over B♭-7 is just the root, seventh and root again, while the one over E♭7 is the root, fifth and seventh.

Adding the walkups

Now let’s forget about the arpeggios for a minute and go back to just playing the chord roots on the downbeats. The bassline walks up to each of these notes via the chromatic scale, that is, every pitch on the piano keyboard.

Chromatic walkups are a great way to introduce some hip dissonance into your basslines, because they can include notes that aren’t in the underlying scale. In “Chameleon” the walkups include A natural and D natural. Both of these notes sound really weird if you sustain them over B-flat Dorian, but in the context of the walkup they sound perfectly fine.

Putting it all together

The full bassline consists of the broken arpeggios anticipated by the walkups.

If you’re a guitarist or bassist, you can play this without even shifting position. Use your index on the third fret, your middle on the fourth fret, your ring on the fifth fret, and your pinkie on the sixth fret.

              .          . .

If you’ve got this under your fingers, maybe you’d like to figure out the various keyboard and horn parts. They aren’t difficult, but you’ll need one more scale, the B-flat blues scale. Click the image to jam with it over the song and experience how great it sounds.

B-flat blues

There you have it, one of the cornerstones of funk. Good luck getting it out of your head!