In 19 CDs overall, I Musici give us a complete survey of the dozen major Vivaldi sets of concertos and sonatas published with opus numbers. Apart from the famous named sets, L"estro armonico, Op. 3, La stravaganza, Op. 4 and Il cimento dell"armonia e dell"inventione, Op. 8 all three dominated by the distinguished solo playing of Felix Ayo and Severino Gazzeloni"s splendid set of the Op. 10 flute concertos, most of this music is very little known.