Instrumental Duet Instrumental Duet,Viola,Violin - Level 3 - Digital Download SKU: A0.915271 By Post Malone. By Austin Richard Post, Billy Walsh, Carl Austin Rosen, Carl Rosen, Carter Lang, Khalif Brown, Louis Bell, and William Thomas Walsh. Arranged by K. Speck. Film/TV,Pop,Wedding. Score and parts. 5 pages. K. Speck #6560193. Published by K. Speck (A0.915271). Sunflower by Post Malone and Swae Lee, VIOLIN AND VIOLA DUET. Arranged by K. Speck (@kspeckmusic)Key- D majorScore- 2 pagesViolin- 2 pageViola- 1 page.