sentences:  8 (1709 - the other six works in this set are double concertos for two violins).The most influential and prolific composer of concertos during the Baroque period was the Venetian Antonio Vivaldi (1678–1741).In addition to his nearly 60 extant ripieno concertos, Vivaldi composed approximately 425 concertos for one or more soloists, including about 350 solo concertos (two-thirds for solo violin) and 45 double concertos (over half for two violins).