Flexible duets and trios-These flexible pieces can be played as either Duets or Trios.Part 1: Bb Soprano and/or Eb Alto Saxophone Part 2:Eb Alto and/or Bb Tenor Saxophone Part 3: (optional) Eb Baritone Saxophone and/or Bassoon.Slow Movement from the Concerto in D minor for two Violins and continuo BWV1043.