GANHarp by Counterpoint is an experimental musical instrument based on AI-generated sounds.
It uses Magenta.js and the Magenta GANSynth model trained on acoustic instruments to generate continuously morphing waveform interpolations, and lets you play them with your computer or MIDI keyboard.
Note: this app is riding the bleeding edge of web technology, and currently requires Chrome 74 or newer to function. Looks like this may not work on your browser, please try Chrome 74+.