found: Ehrenwerth, M. Teufelgeige und ländliche Musikkapellen in Westfalen, 1992(Bumbass; Teufelsgeige)
found: New Grove dict. of musical instruments(Bumbass; basse de Flandre; bowed monochord or stick zither consisting of a heavy gut string attached at each end to a long wooden pole and stretched over a pig's bladder; sounded with a notched stick or sometimes a horsehair bow)
found: New Harvard dict. of music(Bladder and string; bumbass; basse de Flandre; bumba)
found: New Grove Online March 21, 2013:bumbass (bowed monochord consisting of a heavy gut string attached at each end to a long wooden pole and stretched over a pig’s bladder. It is sounded with a notched stick or sometimes a horsehair bow and used in many parts of Europe to provide a droning rhythmic accompaniment to folksong or dance)
found: Harvard dictionary of music, 2003(Bladder and string; bumbass; basse de Flandre; bumba; stringed instrument consisting of a single gut string fastened at both ends to a curved stick, with an inflated animal bladder inserted between them that keeps the string taut and serves as a resonator; scraped with a horsehair bow or a notched stick; known widely in Europe since at least the 17th century)
found: Wikipedia, October 30, 2013(under bladder fiddle; bumbass; poispil; European folk instrument)
