 He worked at the Seminario Romano (1612), Collegio Inglese (1624-6), Cappella Giulia (1626-7).His first two collections of music (the 'Sacrae cantiones' in 1612 and the 'Motecta [...] liber secundus' in 1614), were dedicated respectively to Cardinal Odoardo Farnese and to Cardinal Benedetto Giustiniani (1544-1621), a Jesuit and a great appreciator of music.Between 1629 and 1636 Massenzio published eight books of music.