Composer and maestro di cappella at Sant`Ambrogio, Milan, from 1725 until his death; the majority of his works are for the church or instrumental. Mozart met Sammartini on 7 February 1770, at the Palazzo Melzi, Milan. Lit.: Barblan, `La musica strumentale e cameristica a Milano nel `700`; Churgin, `Did Sammartini Influence Mozart`s Earliest String Quartets?`; Busa and Rossi, Sammartini e il suo tempo; Cattoretti, Giovanni Battista Sammartini and his musical environment; Basso, I Mozart in Italia 652-653