Italian Baroque composer Antonio Caldara (c.1670-1736) was a tremendously gifted musician (viol, cello, and keyboard) and vocalist (including choirboy at St. Mark's, Venice) who probably also composed as fast as anyone else in recorded history. During his life, it's estimated that he wrote at least 3,400 pieces. He held important appointments in several Italian cities, drew a tremendous income, and apparently spent his earnings faster than even he could write new music. Among his numerous compositions are some 90 operas and about the same number of oratorios.