As one of the salient forces in the ritual life of those who worship the pre-Christian and Muslim deities called orishas, the Yoruba god of drumming, known as Ayan in Africa and Ana in Cuba, is variously described as the orisha of drumming, the spirit of the wood, or the more obscure Yoruba praise name AsoroIgi (Wood That Talks). With the growing global importance of orisha religion and music, the consequence of this deity's power for devotees continually reveals itself in new constellations of meaning as a sacred drum of Nigeria and Cuba finds new diasporas.

Despite the growing volume...