Concerto in F minor for harpsichord and strings, BWV 1056, mvt. 2, mm. 13 and 89 (without strings): (a) final reading of autograph score; (b) earlier version of autograph score; (c) oboe version (from BWV 156, transposed)
Listen to the final version (a):
Listen to the early version (b):
Listen to the oboe version (c):