Instrumental Duet Instrumental Duet,Tuba - Level 3 - Digital Download SKU: A0.783409 By Steve Tyrell. By John Frederick Coots. Arranged by John Groves. Christmas,Contemporary,Holiday. Score and parts. 3 pages. John Groves #6139797. Published by John Groves (A0.783409). Santa Claus Is Comin' To Town - arranged for Tuba Duet.