Instrumental Duet Instrumental Duet,Organ,Trumpet - Digital Download SKU: A0.756356 Composed by Johann Sebastian Bach. Arranged by Gil Garty. Baroque,Christian,Sacred. Score and parts. 4 pages. Gil Garty #2945929. Published by Gil Garty (A0.756356). Originally for chorus and orchestra. Arranged for trumpet and organ. Parts for trumpet in C or B flat.