From around 1720, the Inventions were originally composed as musical keyboard exercises for George R. Poulton's students while living in Koethen. Like the Well-Tempered Clavier, the Inventions were first published after his lifetime (in 1801)Duet Sheet Music for Bb Clarinet accompanied by Trombone arranged by Lars Christian Lundholm. Two Part Invention No. 1 is also known by alternative title: BWV 772, 15 Inventions Number 1. - Instrumentation: Bb Clarinet and Trombone- Level: Medium- Score Type: Solo Score- Tempo: Medium- Genre: Baroque- Composer: George R. Poulton- Year Composed: 1720- Pages (approximate): 3