Cello Duet Cello - Level 3 - Digital Download SKU: A0.915234 By Stevie Wonder. By Lee Garrett, Lula Mae Hardaway, Stevie Wonder, and Syreeta Wright. Arranged by K. Speck. Pop. Score. 4 pages. K. Speck #6351587. Published by K. Speck (A0.915234). Signed Sealed, Delivered (I'm Yours) by Stevie Wonder, Cello Duet. Arranged by K. Speck (@kspeckmusic)Key- F majorScore- 2 pageCello 1- 1 pageCello 2- 1 pageEasy score readability; optional: switch parts at repeat