Instrumental Duet,Viola,Violin - Level 3 - Digital Download SKU: A0.1315714 Composed by Richard Storrs Willis. Arranged by Cindy Blevins. Christmas. 5 pages. Cindy Blevins #904462. Published by Cindy Blevins (A0.1315714). This is a beautiful, playable arrangement for the wonderful duet of violin and viola. I have begun doing these duets by special request. You receive the score and the separate parts.