Trombone Quartet, arranged by Sonny Ausman.
This work is very beautifully transcribed in a simple straight forward setting in the key of Db, down a minor 3rd from the original. It features the 1st and 3rd trombone parts.
Use it to feature one player or perform it with a whole choir.
The highest note is Ab, so there isn't a lot of fatigue involved like the original key for the horn solo.