"Duo Mutando" [2.2 MB .mp3]
Half-notes on the Sidstation are played through the Mutator filter while non-sounding 1/16 notes in Cubase change the pitch of the Mutator's cutoff via MIDI. In the piano intro and outro the two groups of notes are combined. An interesting unintended effect here--the first time I've noticed such a pronounced audio afterimage. The Mutator part is so dense the piano afterward sounds thin and trebly, but it's the same piano heard at the beginning. This is like a Joseph Albers exercise (make a color look lighter through a darker surrounding color) except it's not the main point of the work.