Complex sentence: The second on one by Johann Gottfried Eckard (op.1, no.4), the most famous keyboardist of his day, and the third on C. P. E. Bach's piece "La Boehmer", published in the early 1760s.
Split into simpler sentences: The second on one by Johann Gottfried Eckard (op.1, no.4), the most famous keyboardist of his day. The third movement is based on C. P. E. Bach's piece "La Boehmer", published in the early 1760s.