Johann Sebastian Flute Sonata in C Major BWV 1033. The Sonata in C Major for flute and basso continuo (BWV 1033) has movements. It is attributed to Johann Sebastian Bach in the manuscript, which is in the hand of his son Carl Philipp Emanuel Bach and has been dated to about 1731, although scholars question the attribution. The accompaniment of this playalong is made with harpsichord and cello.