Will musicians ever be replaced by robots?

A Quora user asks whether artificial intelligence will ever replace human musicians. TL;DR No.

David Cope and Emily

If music composition and improvisation could be expressed as algorithmic rule sets, then human musicians would have reason for concern. Fortunately, music can’t be completely systematized, much as some music theorists would like to believe it can be. Music is not an internally consistent logical system like math or physics. It’s an evolved set of mostly arbitrary patterns of memes. This should be no surprise; music emerges from our consciousness, and our consciousness is an evolved system, not an algorithmic one. We can do algorithmic reasoning if we work really hard at it, but our minds are pretty chaotic and unpredictable, and it isn’t our strong suit. It’s a good thing, too; we may not be so hot at performing algorithms, but we’re good at inventing new possible ones. Computers are great at performing algorithms, but are lousy at inventing new ones. Continue reading

Music theory blues

I’m reading a lot Schenkerian analyses of blues right now in service of my forthcoming article about blues tonality. Each paper I read is wronger than the last. On the one hand, they fill me with righteous rage, but on the other hand, that rage does at least help me focus my arguments. Here are some particularly awful quotes from a scholar who will remain nameless, because I don’t believe that the racism is intended:

Blue notes, by nature, are alienated from their harmonic environment and have a dissonant relationship with them, giving the blues and all its derivatives a rough, angry character. Nevertheless, the hostility of blue notes toward the surrounding world may be mitigated—“domesticated”—through consonantization.

Blue notes (BNs), by nature, spoil the diatonicism of and cause dissonance in “clean” chords. But these notes may achieve their own independent harmonization, thereby being domesticated and turning into “environment-friendly” consonant notes.

The products of the consonantization of the BNs, which appear in a major-mode harmonic environment, are necessarily flatted degrees. These degrees turn the BNs from minor notes, which are “alien” to the major chords that build the basic harmonic progression, into “family” notes that are “at home” in these chords. The legitimacy that the flatted chords give the BNs is ostensibly the opposite of the “emancipation”that Arnold Schoenberg gave dissonant notes when he freed them from having to resolve to consonance, since the BNs by nature are dissonant notes with no obligation to be resolved.

However, the domestication of the BNs is an emancipatory act, since they thereby stop clashing with the harmony and instead become settled in it.

In Example 1(e), we see flatted or “minorized” degrees, among them VI and III. These degrees now include 3ˆ and 7ˆ not as BNs but in a mixtural framework—that is, as an insertion of flatted notes in a major key. Both of these—mixture and BNs—are common in the Beatles’ songs. Are they related? Ostensibly, they are two completely different things: the journey back in time in quest of the origins of blues will take us to the Mississippi Delta and from there to Africa, whereas the search for the origins of mixture, which is anchored in traditional harmony, will eventually lead us to eighteenth- and nineteenth-century Europe. The connection goes through the “domestication of BNs”—when it can be shown that a particular BN has changed from being outside the consonant harmony, in which case we may regard it as a garnish or a “disturbance,”to being an integral part of a consonant triad. If, for example, we can claim in a particular context that the III chord in Example 1(e) is based on a BN (G), then the status of this BN has improved substantially relative to its status in (c): instead of being an outsider, it becomes a distinguished member of the club of the flatted mediant without losing its blues character.

The status of these [blue] notes in the harmonic society improves substantially in part B: they become the roots of VII and III, and thus they become respected members of the community and live in consonant harmony with the rest of the notes. Their past is nevertheless evident in the descriptive term CBN, which is imprinted on their identity cards.

THAT'S RACIST Continue reading

Blues tonality

Most Americans who study music formally do so using common-practice era western tonal theory. Tonal theory is very useful in understanding the music of western Europe in the eighteenth and early nineteenth centuries, and the music derived from it. However, tonal theory is inadequate to explain the blues and other musics of the African diaspora. Given the central role of this music in both popular culture and art music, music theory classes do their students a grave disservice by not discussing its harmonic content.

The blues cannot be explained by Western tonal theory. Nevertheless, the blues emerged in western culture and is now a central pillar of it. McClary (2001) observes that while twentieth-century music has no single main stream, it does have a “mighty river” that follows a channel cut the blues:

When LeRoi Jones published his powerful book Blues People in 1963, his title referred to the African American musicians who fashioned the blues out of their particular historical conditions and experiences. Yet a music scholar of a future time might well look back on the musical landscape of the 1900 s and label us all “blues people”: those who inhabited a period dominated by blues and its countless progeny (32-33).

It no longer makes sense to think of the blues, or any other music of the African diaspora, as non-Western. Therefore, Western music theory must grow to accommodate the blues, the same way that the music itself has.

Continue reading

Why is “Let It Go” such a big deal?

Anna posed this question, and I think it’s an excellent one: What is up with “Let It Go” and little girls? Why is this song such a blockbuster among the pre-K set? How did it jump the gap from presentational to participatory music? Is it the movie, or the song itself? In case you never interact with pop culture or little kids, this is the tune in question:

I posted the question on Facebook, and my friends have so many good responses that I’m going to just paste them all in more or less verbatim below.

Continue reading

Play with your music theory

Last week I put together a new set of music theory videos.

These videos are aimed at participants in Play With Your Music, who may want to start producing their own music or remixes and have no idea where to start. I’m presuming that the viewer has no formal background, no piano skills and no reading ability. This would seem to be an unpromising place to start making music from, but there’s a surprising lot you can do just by fumbling around on a MIDI keyboard. Playing the white keys only gives you the seven modes of the C major scale, with seven very different emotional qualities. Playing the black keys only gives you the G♭ major and E♭ minor pentatonic scales. From there, you can effortlessly transpose your MIDI data into any key you want.

Continue reading

Can science make a better music theory?

My last post discussed how we should be deriving music theory from empirical observation of what people like using ethnomusicology. Another good strategy would be to derive music theory from observation of what’s going on between our ears. Daniel Shawcross Wilkerson has attempted just that in his essay, Harmony Explained: Progress Towards A Scientific Theory of Music. The essay has an endearingly old-timey subtitle:

The Major Scale, The Standard Chord Dictionary, and The Difference of Feeling Between The Major and Minor Triads Explained from the First Principles of Physics and Computation; The Theory of Helmholtz Shown To Be Incomplete and The Theory of Terhardt and Some Others Considered

Wilkerson begins with the observation that music theory books read like medical texts from the middle ages: “they contain unjustified superstition, non-reasoning, and funny symbols glorified by Latin phrases.” We can do better.

Standing waves on a string

Wilkerson proposes that we derive a theory of harmony from first principles drawn from our understanding of how the brain processes audio signals. We evolved to be able to detect sounds with natural harmonics, because those usually come from significant sources, like the throats of other animals. Musical harmony is our way of gratifying our harmonic-series detectors.

Continue reading

Toward a better music theory

Update: a version of this post appeared on Slate.com.

I seem to have touched a nerve with my rant about the conventional teaching of music theory and how poorly it serves practicing musicians. I thought it would be a good idea to follow that up with some ideas for how to make music theory more useful and relevant. The goal of music theory should be to explain common practice music. I don’t mean “common practice” in its present pedagogical sense. I mean the musical practices that are most prevalent in a given time and place, like America in 2013. Rather than trying to identify a canonical body of works and a bounded set of rules defined by that canon, we should take an ethnomusicological approach. We should be asking: what is it that musicians are doing that sounds good? What patterns can we detect in the broad mass of music being made and enjoyed out there in the world?

I have my own set of ideas about what constitutes common practice music in America in 2013, but I also come with my set of biases and preferences. It would be better to have some hard data on what we all collectively think makes for valid music. Trevor de Clerq and David Temperley have bravely attempted to build just such a data set, at least within one specific area: the harmonic practices used in rock, as defined by Rolling Stone magazine’s list of the 500 Greatest Songs of All Time. Temperley and de Clerq transcribed the top 20 songs from each decade between 1950 and 2000. You can see the results in their paper, “A corpus analysis of rock harmony.” They also have a web site where you can download their raw data and analyze it yourself. The whole project is a masterpiece of descriptivist music theory, as opposed to the bad prescriptivist kind.

Jimi Hendrix, common practice musician

Continue reading

Against music theory

I am mercifully finished with music theory in grad school and couldn’t be happier about it. You may find this surprising. My blog is full of music theory. How could a guy who enjoys thinking about music in analytical terms as much as I do have such a wretched time in my graduate music theory classes? It wasn’t the work, I mostly breezed through that. No, it was the grinding Eurocentrism. Common-practice period classical music theory is fine and good, but in the hands of the music academy, it’s dry, tedious, and worst of all, largely useless. The strict rules of eighteenth-century European art music are distantly removed from the knowledge a person needs to do anything in the present-day music world (except, I guess, to be a professor of common-practice tonal theory.)

The title of this post is a reference to the Susan Sontag essay, “Against Interpretation.” She argues that by ignoring the subjective sensual pleasures of art and instead looking for rigorously logical theories of its inner workings, academics are missing the point. She calls scholarly interpretation “the intellect’s revenge upon art.” I’m with her. Music theory as practiced at NYU and elsewhere is the intellectual’s revenge on music. Sontag’s punchline is right on: “[I]n place of a hermeneutics we need an erotics of art.” Speak it, sister!

Susan Sontag

Continue reading

What is polyphony?

The word is from Greek, “poly” meaning many and “phony” meaning voice. This is as opposed to monophony — one voice. Originally, polyphony literally meant multiple people singing together. Over the course of musical history, the term has become more abstracted, referring to multiple “voices” played on any instrument. And usually, polyphony means that the different voices are all playing/singing independent lines.

Continue reading

The Nirvana effect

I’m currently working on a book chapter about the use of video games in music education. While doing my research, I came across a paper by Kylie Peppler, Michael Downton, Eric Lindsay, and Kenneth Hay, “The Nirvana Effect: Tapping Video Games to Mediate Music Learning and Interest.” It’s a study of the effectiveness of Rock Band in teaching traditional music skills. The most interesting part of the paper comes in its enthusiastic endorsement of Rock Band’s notation system.

Rock Band 3 notation

The authors think that Rock Band and games like it do indeed have significant educational value, that there’s a “Nirvana effect” analogous to the so-called Mozart effect:

We argue that rhythmic videogames like Rock Band bear a good deal of resemblance to the ‘real thing’ and may even be more well-suited for encouraging novices to practice difficult passages, as well as learn musical material that is challenging to comprehend using more traditional means of instruction.

Continue reading