Trombone Quartet Bass Trombone - Level 3 - Digital Download SKU: A0.1135606 Composed by Adrianus Valerius and Eduard Kremser. Arranged by Nathaniel Hontz. Chamber,Christian,Holiday,Sacred,Traditional. 8 pages. TigerSong LLC #735661. Published by TigerSong LLC (A0.1135606). Old Dutch hymn of thanks and independence We Gather Together, arranged for trombone choir (quartet). Great for Thanksgiving or anytime of year.