The concertos of Francesco Mancini (1672-1737) recorded here all come from a 1725 manuscript collection now in the Biblioteca del Conservatorio di Musica di Napoli . . . The collection is entitled "Concerti di Flauto, Violino, Violetta e Basso di Diversi Autori". Interestingly enough, in the individual part-books, the pieces are all called "sonatas". This discrepancy of nomenclature reflects the general fluidity of form throughout the Baroque era. The forms of pieces called "concerto", "quartet", "sonata", "canzona", and "fantasia" were not standardized, and the terms were frequently used interchangeably.