Anonymous reader points out this squeezebox gone digital, incorporating a 16-button monome pad –

the Concertinome is a custom made instrument combining the concertina accordion with the monome style keyboard and electronic air pressure sensors. It was made by Espen Sommer Eide 2009 and demonstrated in this concert at Visningsrommet USF, Bergen, Norway.

Seems like a natural progression to me! The instrument uses an Arduino Mega running a custom monome-compatible sketch.

In the Maker Shed:

arduinomega_crop_cc.jpg

Arduino Mega