Casall, GIOVANNI BATTISTA, musician, b. at Rome in 1715; d. there 1792. From 1759 until his death he held the position of choir-master in the church of St. John Lateran. Of his numerous compositions a mass in G major and several motets (Confitebor tibi, Ave Maria, Exaltabo, Improperium) have been reprinted in Lueck’s “Collection” (Ratisbon, 1859). These compositions, while liturgical in spirit and form, show a considerable departure from the great period of the Roman School in a freer use of the dissonance, and they also bear witness to the influence of the opera in which form Casali also wrote. Most of his works are preserved in the library of Abbate Santini in Rome. Casali was one of the last of that period to write for voices a capella.