The kreepback instrument is an assemblage of self-built sound generating devices and discarded analogue audio hardware patched together to create a feedback labyrinth: in its hermetically sealed universe, sound creeps back on itself. Found objects such as meat mincers, candlesticks, wooden sculptures and teapots are all used to steer and control the feedback. Since 2001 the instrument has gone through various stages of development.

The kreepback instrument can be heard on the forthcoming kreepa album and the new Sand album released on Soul Jazz Records 2006.