Instrumental Duet Instrumental Duet,Viola,Violin - Level 4 - Digital Download SKU: A0.815154 By Adele. By Adele Adkins and Paul Epworth. Arranged by Julie Doubleday. Pop,R & B. Score and parts. 9 pages. Julie Doubleday #6571689. Published by Julie Doubleday (A0.815154). Skyfall for Violin and Viola Duet.