My latest commission is one of two Dronemachines for composer Christopher Campbell.
It's made from 100% reclaimed materials. The Circular cog acts as an adjustable bridge that you can change the pitch of the strings by rotating it slightly. An unexpected result of the design was that when the bridge is turned, one half of the strings go up in pitch while the other half goes down! it sounds like this:
The second machine will be ready shortly which has a slightly different playing mechanism! Be sure to check out Chris' label Innova Recordings