Brass Ensemble Horn,Trombone,Trumpet - Level 4 - Digital Download SKU: A0.686690 By Jason Mraz. By Jason Mraz and Michael Natter. Arranged by Fernando Britto. Contemporary,Pop,Rock,Wedding. Score and parts. 6 pages. Minhas Partituras #6458997. Published by Minhas Partituras (A0.686690). Arrangement of the song I Won't Give Up (Jason Mraz) for Brass Quartet (Trumpet in Bb 1, Trumpet in Bb 2, Horn in F and Trombone).