I shall play you the music of Markov's people

[Metatron]

 

A Markov chain defines the chance that a process will move from one state to another state. Music can be thought of as a series of series of states over time. By parsing a musical script, you can generate a matrix that defines the chance of playing a note n after having played a note m. By pulling a series of (semi) random numbers out of a source, you can generate a new song whose movement from note to note is similar to that of the original song.

 

Someone in the youtube comments guessed that this was gleaned from a Debussy song. For reference, here's Claire de Lune by Debussy:

[Lilith]

yeah, there's been some interesting research into automatic generation of music lately

 

the limitation, as you can probably hear yourself just by listening to it, is that it's hard to include large-scale structure without human intervention; left to its own devices the music will just kind of meander back and forth without end or purpose