Instrumental Duet Cello,Instrumental Duet,Viola - Level 4 - Digital Download SKU: A0.1161383 Composed by Alex Gibson, Hans Florian Zimmer, and Ryan Romeyn Rubin. Arranged by ANDRE LAITANO. Pop. Score and parts. 18 pages. ANDRÉ DOS SANTOS #761735. Published by ANDRÉ DOS SANTOS (A0.1161383). Interstellar - Hans Zimmer (Viola and Cello Duo).