Data Visualisation - Midi

I was curious to know if any piano piece uses close to the entire keyboard. A search brought up the 'Ballade Opus 23' by Chopin, which nearly covers all 88 keys.

I coded this up in pymel/python in Maya. It reads in midi data, parses it into something readable and outputs the results. Uses the Renderman/3delight technique of primitive variables to set the color range. Output in 3delight.