Of particular interest amongst the numerous sets of instrumental duos composed by François Devienne is the fifth ‘livre’ comprising six ‘duos concertants’ for the uncommon pairing of flute and viola; the viola does not, as one might expect, provide a bass line to the flute but is treated as a treble instrument. All of the duos are cast in two movements, generally an allegro followed by either a rondo or a theme and variations, and they feature various solo episodes for each of the two instrument...