The Insect Orchestra, via JvGrieken, is an experimental music project, done for at HKU School of Fine Arts Utrecht.
It uses an Arduino to process the inputs from the light sensitive resistors and outputs it as a MIDI message. Software on the computer then turns this value into the corresponding note.
All the sounds are made in Ableton Live and in the second part of the video you can hear the 4 different modes, instruments, synthesis, samples and drums.