Mention the name John Cage, and you’ll get a smirk out of every former music appreciation student.

“John Cage? Oh yeah, I like his music. I especially like his 4’33”, heh heh.”

Even if Cage’s music isn’t exactly the kind of stuff you turn on to relax at the end of a difficult day, he does make you think. Another of his famous philosophy-based compositions is “Music of Changes“. There is an ancient Chinese divination book, the I Ching, in which you toss three coins six times to determine your fortune. (you can use the I Ching online!) Cage took this idea and translated it into a compositional device. So instead of thinking, “I think this piece needs a quarter-note G here,” Cage used the I Ching to tell him what notes to put where – in a manner of speaking, removing the composer from the compositional process, and leaving every choice to a coin toss.

This idea of reducing the control of the composer is known as Indeterminacy, and was a reaction to a style called Serialism, in which the composer carefully organized everything with inflexible mathematical structures. The irony is that both the random Indeterminate music and the ultra-organized Serialist music both sounded the same – inhuman, confusing, and difficult.

So, what happens when a composer says “Let It Go!” and writes music based on chance alone? Listen: