The Double Violin Concerto is one of JS Bach's most celebrated works, written sometime between 1717 and 1723. In the first movement, the two violinists work as a team in replying to the orchestral tuttis. The famous second movement is tender and expressive, and the concerto ends with an angry Allegro movement. Here you can purchase and download the (transcribed) piano parts to play along to, recorded by a professional accompanist.