(Music Sales America). The six Flute Sonatas of J.S. Bach fall into two groups of three. In Nos. 1-3 the composer provided a concertante keyboard part, where the right hand is as musically important as the flute and bass lines, apart from the occasional passage when he reverts to a figured bass. Nos. 4-6, however, adopt the four-movement pattern favored, for instance, by Telemann. This edition is has been edited and realised by William Bennett. The solo flute part is also included on a separate insert.