Eva Ayllon is a singer steeped in the lively music of Peru's coastal plain, with a vast repertoire of songs drawn from the Andean nation's indigenous, African and Spanish heritage that combine call-and-response vocal lines, West African polyrhythms and starkly evocative melodies. Susana Baca may be the face of Afro-Peruvian music in the United States, but Ayllon is far more popular at home. 8 p.m. Oct. 9 at the Cowell Theater in Fort Mason, San Francisco. $40; (510) 524-1396.