Werk BWV 906

Fantasia and Fugue in C minor, BWV 906, is a keyboard piece, likely unfinished, composed by Johann Sebastian Bach sometime during his tenure in Leipzig (1723–1750). The work survives in two autograph scores, one with the fantasia alone, and the other, believed to have been penned around 1738 in which the fugue is incomplete.[2] The piece is notable for being one of Bach's latest compositions in the prelude and fugue format, and for being a showcase of Bach trying his hand at the emerging galant[3] and empfindsam[4] styles of music that his sons were known to compose.