Instrumental Duet,Piano Cello,Instrumental Duet,Piano,Violin - Level 2 - Digital Download SKU: A0.1217393 By Taylor Swift. By Johan Schuster, Max Martin, Shellback, and Taylor Swift. Arranged by Flávio Ageu. 20th Century,Classical,Film/TV,New Age,Pop. 5 pages. Flávio Ageu Dos Santos Silva #813939. Published by Flávio Ageu Dos Santos Silva (A0.1217393). Violin and Cello Duet.