Bach Solfeggio in C minor, H. 220

Carl Philipp Emanuel Bach composed his Solfeggietto in 1766. It is a short solo keyboard piece in the key of C minor, with versions for both standard keyboard (purely monophonic) and organ. The work is actually called Solfeggio, although it is usually referred to as Solfeggietto' (a diminutive). It's usually a study piece for beginners.