(b ?Daroca, nr Zaragoza, c.1655; d ?Zaragoza, c.1730). Spanish theorist, organist, and composer. Born blind, he was taught by another blind organist, Pablo Bruna. He spent most of his life in Zaragoza as organist in the Real Convento of S. Francisco, being a member of the order from at least as early as 1683. His most important contribution were the printed treatises Fragmentos musicos (Zaragoza, 1683, enlarged 2/Madrid, 1700) and the two-volume Escuela musica (Zaragoza, 1723–4). His theoretical writings, which follow 17th-century conventions in their censorious view of secular music, reflect the conservative ecclesiastical context in which he worked. Nassarre's few surviving works are mainly for the organ.
From The Oxford Companion to Music in Oxford Reference.