Automatic Harp Kyle Luntz 2019:
Autoharp with added solenoids, Arduino, Raspberry Pi and graphical touch interface for programming polyrhythms

Leslie speaker with audio-processing microcontroller
Modified music box with piezo and echo circuit
Zither with automated strumming, electromagnetic pickups and vibrational feedback
Electromagnetic pickups added to music boxes for processing and amplification
Music box with spring-suspended piezo
Image-based MIDI sequencer
Modified Chord Organ
Cassette tape echo