Someone on another forum mentioned using a length of stovepipe as an instrument. From what I gather it's used as a rhythm instrument, but possibly in a fashion similar to a musical jug or didgeridoo instead of by striking it. There's even supposed to be an out-of-print recording of playing examples. Has anyone else heard of this or seen/heard it being played?

A Google search for "musical stovepipe" (with quotes) struck out and without quotes yielded more results (mostly band or tune names & references to stovepipe hats) than I felt like sifting through.