Ch-ch-ch-check out, check out check out my melody

My computer dictionary says that a melody is “a sequence of single notes that is musically satisfying.” There are a lot of people out there who think that rap isn’t music because it lacks melody. My heart broke when I found out that Jerry Garcia was one of these people. If anyone could be trusted to be open-minded, you’d think it would be Jerry, but no.

I’ve always instinctively believed this position to be wrong, and I finally decided to test it empirically. I took some rap acapellas and put them into Melodyne. What I found is that rap vocals use plenty of melody. The pitches rise and fall in specific and patterned ways. The pitches aren’t usually confined to the piano keys, but they are nevertheless real and non-arbitrary. (If you say a rap line with the wrong pitches, it sounds terrible.) Go ahead, look and listen for yourself. Click each image to hear the song section in question. Continue reading

The Blurred Lines lawsuit

Marvin Gaye is one of the great singers and songwriters of all time, with a status deservedly approaching secular sainthood. Robin Thicke is a sleazy dirtbag who made a giant pile of money by knocking off one of Marvin’s songs to produce a rapey earworm,  accompanied by a porn video. Naturally, I side with Team Marvin, and am delighted that Thicke and Pharrell lost the lawsuit.

While my fellow musicians are gleefully crowing, other observers are worried that this case sets a bad precedent. Michaelangelo Matos is among them.

I encourage vocal fans of this verdict to demonstrate their solidarity by deleting and/or destroying every piece of music they own featuring an unlicensed sample or bearing a notable resemblance to an earlier piece of music. But they won’t, and they shouldn’t, because that would entail deleting just about everything. Even if you loathe Thicke, this is no cause for celebration, because the size of the Gaye estate’s bounty is only going to encourage more lawsuits like this one.

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Pop songwriting in the age of the Digital Audio Workstation

Bennett, J. (2011). Collaborative songwriting – the ontology of negotiated creativity in popular music studio practice. Journal on the Art of Record Production, (5), online.

My professional life at the moment mostly consists of teaching classical and jazz musicians how to write pop songs. While every American is intuitively familiar with the norms of pop music, few of us think about them explicitly, even trained musicians. It’s worth considering them, though. While individual pop songs might be musically uninteresting, in the aggregate they’re a rich source of information about the way our culture evolves. Bennett describes popular song as an “unsubsidized populist art form,” like Hollywood movies and video games. The marketplace exerts strong Darwinian pressures on songwriters and producers, polishing pop conventions like pebbles being tumbled in a river.

Tin Pan Alley

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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

Internet blues

Recently, WNYC’s great music show Soundcheck held a contest to see who could do the best version of the 100 year old song “Yellow Dog Blues” by WC Handy.

Marc Weidenbaum had the members of the Disquiet Junto enter the contest en masse. I did my track, put it on SoundCloud, and promptly forgot all about it.

A month later, I was surprised and delighted to learn from Marc’s blog that the contest winner was Junto stalwart Westy Reflector.

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Fractal music

Continuing my series of posts on the ways that science might explain why we like the music we like. See also my posts on the science of rock harmony, harmony generally, and Afro-Cuban rhythms.

Quora user Marc Ettlinger recently sent me a paper by Sherri Novis-Livengood, Richard White, and Patrick CM Wong entitled Fractal complexity (1/f power law) determines the stability of music perception, emotion, and memory in a repeated exposure paradigm. (The paper isn’t on the open web, but here’s a poster-length version.) The authors think that fractals explain our music preferences. Specifically, they find that note durations, pitch intervals, phrase lengths and other quantifiable musical parameters tend to follow a power law distribution. Power-law distributions have the nifty property of scale invariance, meaning that patterns in such entities resemble themselves at different scales. Music is full of fractals, and the more fractal-filled it is, the more we like it.

Mandelbrot zoom

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Why is son clave so awesome?

One of the best discoveries I made while researching my thesis is the mathematician Godfried Toussaint. While the bookshelves groan with mathematical analyses of western harmony, Toussaint is the rare scholar who uses the same tools to understand Afro-Cuban rhythms. He’s especially interested in the rhythm known to Latin musicians as 3-2 son clave, to Ghanaians as the kpanlogo bell pattern, and to rock musicians as the Bo Diddley beat. Toussaint calls it “The Rhythm that Conquered the World” in his paper of the same name. Here it is as programmed by me on a drum machine:

The image behind the SoundCloud player is my preferred circular notation for son clave. Here are eight different more conventional representations as rendered by Toussaint:

Toussaint - visualizing son clave 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.

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