(b Rome, 1582; d Rome, Feb 7, 1652). Italian composer and singer, brother of Domenico Allegri. From 1591 to 1596 he was a boy chorister and from 1601 to 1604 a tenor at S Luigi dei Francesi, Rome, where the maestro di cappella was G.B. Nanino. According to Allegri’s obituary he studied with G.M. Nanino (see Lionnet). He was active as a singer and composer at the cathedrals of Fermo (1607–21) and Tivoli, and by August 1628 he was maestro di cappella of Santo Spirito in Sassia, Rome. He joined the papal choir as an alto on 6 December 1629, under Urban VIII, and was elected its maestro di cappella for the jubilee year of 1650. In 1640 his fellow singers elected him to revise Palestrina’s hymns (necessitated by Urban VIII’s revision of the texts), which were published in Antwerp in 1644. His contemporaries clearly saw him as a worthy successor to Palestrina and a guardian of the ...