Cello Duet Cello - Level 4 - Digital Download SKU: A0.915232 By Beyonce. By Beyonce Knowles, Evan Bogart, and Ryan Tedder. Arranged by K. Speck. Contemporary. Score. 8 pages. K. Speck #6351573. Published by K. Speck (A0.915232). Halo by Beyonce, Cello Duet. Arranged by K. Speck (@kspeckmusic)Key- A major (Original Key)Score- 4 pagesCello 1- 2 pagesCello 2- 2 pagesThe melody is shared between both players, making this an engaging arrangement from start to finish.