Uploaded April 2026 | Updated September 2026, 2 weeks ago

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Ball-bearing pattern using 16th notes, playing chords as the switch array is polyphonic. The ball-bearings activate switches which play a Waldorf Streichfett string synth via MIDI. The device also sends analogue CV triggers for each new note: these are used via an envelope generator to filter the output in stereo.
This is a longer version of a section from my video of technical developments as part of my recently completed PhD, "Mechanical Techno: extended turntable as live assemblage."
Full technical video: youtu.be/sBhGbHVQYvI
Thesis and media: grahamdunning.com/PhD
An album recorded using these methods and devices: grahamdunning.bandcamp.com/album/quern