Also known as "Bach Double", "Double Violin Concerto", and "Doppelkonzert für zwei Violinen", this piece was composed circa 1720 and first published in 1852. Interestingly, in 1736 Bach arranged it for two harpsichord. It is known as "Concerto for 2 Harpsichords in C minor", BWV 1062 (or "Concerto pour deux clavecins").