Non sa che sia dolore (He knows not what sorrow is), BWV 209,[a] is a secular cantata composed by Johann Sebastian Bach and possibly first performed in Leipzig in 1747.
Mincham draws attention to an interest in Ansbach in Italian music, and suggests that Bach would have known that the city was the home of Giuseppe Torelli at the end of the 17th century.
It has been suggested that Bach composed this cantata as a farewell for someone leaving Leipzig's academic community such as Johann Matthias Gesner (1691-1761) or Lorenz Albrecht Beck (1723-1768),[1] both men having connections with Ansbach.
The piece is scored for solo soprano voice, flauto traverso, two violins, viola, and basso continuo.
The second recitative is short and secco, contrasting sharply with the final "ebulliently major" da capo aria.