Cello,Instrumental Duet,Oboe - Level 3 - Digital Download SKU: A0.596408 Composed by Daniel Hay. Classical,Contemporary,Multicultural,World. 2 pages. Daniel Hay Music #5722001. Published by Daniel Hay Music (A0.596408). A treble/bass duet for any instrument combinations. Composer keeps treble range to two octaves from middle-C. Bass range may go as low as C below the bass staff and as high G in the treble clef. The audio sample is voiced as oboe and cello.