Instrumental Duet Instrumental Duet,Piano - Level 3 - Digital Download SKU: A0.874382 Composed by Francois Couperin. Arranged by Dr. Walden Hughes. Baroque,Standards,World. Score and parts. 8 pages. PianoEnsembleMusic #3411545. Published by PianoEnsembleMusic (A0.874382). Couperin's Rondeau, Mysterious Barricades, arranged by Dr. Walden Hughes for Piano Duet (1 Piano 4 Hands)