Instrumental Duet Instrumental Duet,Viola,Violin - Level 2 - Digital Download SKU: A0.689944 By Idina Menzel. By Kristen Anderson-Lopez and Robert Lopez. Arranged by Fabio Britto. Broadway,Film/TV,Musical/Show,Pop,Wedding. Score and parts. 3 pages. Minhas Partituras #6711293. Published by Minhas Partituras (A0.689944). Arrangement of the song Let it Go (from Frozen) for Violin & Viola Duo.