String Ensemble,String Trio Viola,Violin - Level 1 - Digital Download SKU: A0.710396 By David Guetta Featuring Usher. By David Guetta, Frederic Riesterer, Giorgio Tuinfort, Rico Love, Taio Cruz, and Usher Raymond. Arranged by Paulo Galvao Filho. Film/TV. Score and parts. 6 pages. Paulo Galvao Filho #6366509. Published by Paulo Galvao Filho (A0.710396).