Here’s an instrument I made in the mid 1990s while at Dartington. It’s a set of tuned cylindrical chimes suspended by fishing wire over a wooden tank of water. A foot pedal lowers the chimes into the water, which flattens the pitch.
It was largely successful, but It was extremely heavy, cumbersome, rusty, leaky and unpredictable.
In late 2016 I designed and made a new instrument, a sort of cross between a shakuhachi and a Swanee whistle, partially based on an idea from the excellent Musical Instrument Design by Bart Hopkin. It’s a fairly versatile instrument, though difficult to play (and probably not appropriate for “serious music”). This is a demonstration video.