Vivaldi's Concerto in F RV 433 for Flute, Strings, and Basso Continuo. Called in both cases 'La tempesta di mare,' the work's opening Allegro has a characteristic thumping unison repeated-note theme with the flute soloisttrading short lines in imitation with the orchestral violins in the outer sections and warbling maniacally above the ripieno in the central episodes. The opening closes on a big half cadence and then moves into the quiet centralLargo, with the flute soloist becalmed in the ey