Instrumental Duet Instrumental Duet,Piano - Level 3 - Digital Download SKU: A0.900091 Composed by Frederick Delius. Arranged by Tony Patriarche. 20th Century,Concert. Score and parts. 7 pages. Musicus Arbutus #3028727. Published by Musicus Arbutus (A0.900091). Arrangement for piano duet of this beautiful orchestral tone poem by Frederick Delius, #1 of Two Pieces for Small Orchestra. The arrangement is faithful to the original, except in a few places where I have applied a more pianistic style. The extreme chromaticism may present sight-reading problems for some pianists, but it is not demanding technically for either performer, so I have rated it Intermediate.