W.A. Mozart - The Last Sketchleaf (September 1791)

1. Sketch for the Overture to Die Zauberflöte (The Magic Flute), K. 620. This fragment is a motif borrowed from the Piano Sonata No. 2 in B flat, Op. 24 by Muzio Clementi that Mozart heard in his legendary keyboard duel with him.
2. Sk 1791a: sketch for an Allegro in F (has been suggested as a motivic idea for the Recordare in the Requiem).
3. Sketch for an "Amen" fugue to close the Sequence of the Requiem, K. 626.
4. Sketch for the voices of the "Rex tremendae" movement of the Requiem, K. 626.