Pie Jesu from Requiem by Gabriel Faure. Arranged for brass quintet with moderate difficulty.
In this arrangement the melody is in the 1st trumpet part. This piece was originally written for Soprano solo and orchestra or organ if you don't happen to have an orchestra at your command.
All HGM quintets include the standard parts for brass quintet::
2 Trumpets in Bb
1 Horn in F
1 Trombone in C
1 Tuba in C
Listen to this arrangement here: