are instruments in which the sound is made by' the vibration of a stretched membrane or skin, such as barrel and waisted drums, kettledrums, band drums.
The whole collection, a total of 161 musical instruments including examples of aerophones, chordophones, membranophones
and idiophones, unfortunately cannot be opened to the public.
Seventy-two instruments are distributed evenly among the four players and grouped by timbral or articulatory characteristics into families: lignophones, for example, claves, wood blocks, castanets, and temple blocks; metallophones, featuring Asian cup bells and Chinese cymbals that impart a distinct oriental flavor; membranophones
, such as bongos, timbales, tom-toms, and bass drums; and instruments capable of multiple articulations, such as snare and parade drums.
The timbre of the third sound-scape derives from membranophones
, including two pairs of timpani, tom-tom, and other members of the drum family.
Although no instruments of definite pitch are included, the composer definitely thinks in melodic terms, if "melodic" can be applied to describe the sounds of unpitched membranophones
The instruments are introduced in subgroups of idiophones, membranophones
, and so forth, and each group is summarized in boxed tables for easy review.
The author then proceeds to describe in great detail a large number of musical instruments, following the logical taxonomy of idiophones, membranophones
, aerophones, and dance.