Instrumental Duet Instrumental Duet,Viola,Violin - Level 3 - Digital Download SKU: A0.915318 By Stevie Wonder. By Lee Garrett, Lula Mae Hardaway, Stevie Wonder, and Syreeta Wright. Arranged by K. Speck. Pop. Score and parts. 4 pages. K. Speck #6878807. Published by K. Speck (A0.915318). Signed Sealed, Delivered (I'm Yours) by Stevie Wonder, Violin and Viola Duet. Arranged by K. Speck (@kspeckmusic)Key- F majorScore- 2 pageViolin- 1 pageViola- 1 page.