A djembe or jembe is a rope-tuned, skin-covered goblet drum played with bare hands from the Sabar family, originally from Senegal that is widely used in West Africa. According to the Bambara people in
Lenke wood djembe from Mali
Les Ballets Africains in Bonn, Germany, 1962
Djembefola DVD cover
Spectrum analysis of a bass. The big hump is the Helmholtz resonance.