Instrumental Duet Instrumental Duet,Trombone,Trumpet - Level 2 - Digital Download SKU: A0.681596 Composed by Daniel E. Kelly. Arranged by Gert Th. Walter. Country,Patriotic. Score and parts. 3 pages. Gert Th. Walter #5206959. Published by Gert Th. Walter (A0.681596). Very easy arrangement, but not only for pupil and beginners.