Chapter Five Polyrhythm
Multi-Layered Rhythmic Structure Organized by a Common Unit Too Rapid to Be Perceived as a Beat Polyrhythm
Percussion Family Idiophones Membranophones
Produce their sounds from the materials from which they are made--such as claves, xylophones, cymbals Idiophones
Definite Pitch xylophone marimba ganda/amadina (African) vibraphones glockenspiel (bells) chimes (tubular bells) steel drums gong Indefinite Pitch cymbals (Turkish/Chinese) triangle tam-tam woodblock (Chinese––ban) claves castenets temple blocks maracas ratchet güiro Idiophones
Produce their sounds through the vibration of a stretched skin or membrane Membranophones Or a combination of membrane and idiophone.
Definite Pitch <nakers timpani> tabla kalangu dundun Membranophones
Indefinite Pitch Raised Rims field drum bass drum tom-toms timbales snare drum (sound modified by metal snares on bottom head) No Raised Rims bongos congas tambourine shaman drums bodhran Membranophones
W. African Percussion Instruments Idiophones Agogo Xylophones Shakere (rattles)
W. African Percussion Instruments Membranophones Djembe (hourglass drum) Dundun (talking drum)