According to Presser, this contains the melody of Paul Gerhard's hymn "Gib dich zufrieden und sei stille" but the text does not accompany the piece. The bass was probably written by Johann Gottfried Bernhard (3rd son of Bach's 1st marriage as an assignment. Rods hold all the notes as color coded pierced squares. Presser imagines that the child threads the bright colors to make music. The booklet at the bottom has the name & #510 of the piece, Bach's name in # (14-41) & Presser's name in #35- -- Source of annotation: Marvin or Ruth Sackner.