Instrumental Duet Flute,Instrumental Duet,Trombone - Level 2 - Digital Download SKU: A0.844914 Composed by Phil Beaman. Classical,Instructional. Score and parts. 4 pages. Phil Beaman #5994665. Published by Phil Beaman (A0.844914). For this Instrumental Duet I took an anon 18th century theme and created a piece in the style of Mozart. Repeated sections alternate loud-soft, tongued-slurred, major-minor, which add interest and learning opportunities. Easy to play and fun to play. An instant classic.