The Violin Concerto in A minor, BWV 1041, was composed by Johann Sebastian Bach. While it is "generally thought to have been composed at Köthen in 1717-23", Christoph Wolff has argued that the work may have been written in Leipzig during Bach's time as director of the Collegium Musicum; John Butt also believes that Bach wrote it "probably soon after taking over the Leipzig Collegium Musicum in 1729". In any event, the only autograph source to survive are parts Bach copied out (along with other copyists) in Leipzig circa 1730 from a now lost score or draft.