Chorus - Digital Download SKU: AX.00-PO-0003420 The Impossible Dream (from the musical Man of La Mancha) - SATB. Composed by Mitch Leigh. Arranged by Mark Hayes. Choral. 11 pages. Alfred Music - Digital Sheet Music #00-PO-0003420. Published by Alfred Music - Digital Sheet Music (AX.00-PO-0003420). UPC: 038081490755. Joe Darion.Inspirational lyrics, a lush accompaniment, and well-crafted vocal harmonies. What more could you ask from this thrilling new arrangement by Mark Hayes? A real tour de force that is equally moving with either the full piano accompaniment or the complete orchestration.Inst. Parts Available (choral); Recorded Acc. Available.