Antegnati, Costanzo, Italian organist, organ builder, and composer; b. Brescia (baptized), Dec. 9, 1549; d. there, Nov. 14, 1624. He was born into a family of organ builders. In 1584 he became organist at Brescia Cathedral. He supervised the building of more than 140 organs and publ. the valuable treatise L’arte organica (Brescia, 1608; ed. in the Corpus of Early Keyboard Music, IX, 1965), which contains information on tuning and registration. He publ. masses, motets, Psalms, canzoni, and madrigals in Venice (1571–1608).
—Nicolas Slonimsky/Laura Kuhn/Dennis McIntire