This video, via David Cranmer (thenervoussquirrel), is a quick demo of a sort of robotic drumline, controlled by a large-format modular synthesizer.
Here’s what Cranmer has to say about the project:
This was a nice commission from Michael Donnelly in Australia. The solenoids are completely isolated from the synth system – it takes low current triggers and then uses a separate power supply to activate the mallets.
You can see more his custom creations at the Nervous Squirrel site.