A musette is a small French bagpipe, fashionable at court in the 17th and 18th centuries, and the musette dance imitates it: a melody over a bass that never moves. Composers wrote musettes for harpsichord, often as the middle part of a gavotte.
This one was copied into the 1725 notebook of Anna Magdalena Bach, the collection of household music that also holds the Minuets in G and G minor. The copy names no composer, so the Bach catalogue lists it in its appendix, BWV Anh. 126, among the pieces attributed to Bach.
This transcription: Musette in D, BWV Anh. 126, from the Notebook for Anna Magdalena Bach (1725), Bach-Gesellschaft edition: Mutopia Project no. 79, typeset by Allen Garvin, placed in the public domain; complete, with the da capo of the first part written out.
Transcribed by GOONS Studio from the original work, which is in the public domain.