(b Bologna, 1706; d Bologna, 1784).
It. composer and theorist. Studied mus. and mathematics. Entered monastery 1721, but abandoned monastic life and returned to Bologna 1722. Choirmaster, S. Francesco, Bologna, 1725. Took minor orders 1725, ordained priest 1729 and devoted much time to scientific aspects of mus., amassing library of 17,000 books. Pupils incl. J. C. Bach, Grétry, Mozart, and Jommelli. Wrote church mus., instr. sonatas, and theoretical books.