br ... br br br br Brad Rau performs the Bach Chaconne for the Little Night Music Concert Series at Community Music School. br br The Chaconne is the last movement of the Partita no. 2 for Violin. It was written between 1717 and 1720. It is composed of 64 variations on a bass theme. It is one of the most difficult and most beautiful of all of Bach's writings. br br bradraumusic.