Trumpet Voluntary (Duet for Bb-Trumpet – Organ Accompaniment) for Organ,Trumpet,Brass Duet written by Jeremiah Clarke. The format of this sheet music is Score and it’s published by Exultet Music. Trumpet Voluntary (Duet for Bb-Trumpet – Organ Accompaniment) is part of the following sheet music categories: Classical Period,Baroque Period,Movies,Anniversary,Wedding.