Instrumental Duet Instrumental Duet,Oboe,Piano - Level 4 - Digital Download SKU: A0.950976 Composed by Piet Zorn. 20th Century,Wedding,World. Score and parts. 17 pages. Piet Zorn #4614991. Published by Piet Zorn (A0.950976). This is an intermediate piece for oboe and piano in the key of C Major. .