Trumpet duets. Five Bach keyboard Inventions for 2 Trumpets. for Trumpet,Brass Duet,Trumpet 1,Trumpet 2 written by J S Bach. The format of this sheet music is Score,Set of Parts and it’s published by Pott Shrigley Press. Trumpet duets. Five Bach keyboard Inventions for 2 Trumpets. is part of the following sheet music categories: Baroque Period,Graduation,Recital.