DESCRIPTION:
Non sa che sia dolore (He knows not what sorrow is), BWV 209,[a] is a secular cantata composed by Johann Sebastian Bach and first performed in Leipzig in 1747.Bach likely composed this cantata as a farewell for Lorenz Albrecht Beck (1723-1768). The librettist for the work is unknown.

Bach may have derived the opening sinfonia in B minor from a previous concerto. It includes a prominent "baroque 'weeping' figure". The first recitative uses tonality to underline the meaning of the "quasi-philosophical" text. The following da capo aria is in E minor and features a flute obbligato. The second recitative is short and secco, contrasting sharply with the final "ebulliently major" da capo aria

The piece is scored for solo soprano voice, flauto traverso, two violins, viola, and basso continuo.

Source: Wikipedia (https://en.wikipedia.org/wiki/Non_sa_che_sia_dolore,_BWV_209).

I created this arrangement of the first Aria: "Parti pur e con dolore" (Go then, and with grief) is for Flute, Oboe & Strings (2 Violins, Viola & Cello).