Trombone Duet Trombone - Level 1 - Digital Download SKU: A0.1136216 By Mariah Carey, Pentatonix, and Phil Wickham. By George Frideric Handel. Arranged by Jerremy Fender. Children,Christmas. Score. 1 pages. Jerremy Fender #736239. Published by Jerremy Fender (A0.1136216). This classic Christian hymn has been arranged for a simple trombone duet. The melody is given entirely to the first trombone part in Bb major. But also only goes up to Bb3 and is very accessible for your Christmas recital or concert.