Sheet music, scores:
Mendelssohn Felix Piano Prelude Op 104A 2

Translation: Prelude in C Minor, Op. 28, No. 20. Prelude in A Major, Op. 28, no. Symphony No. 104 in D Major.

Translation: Piano Works Vol.3 composed by Felix Bartholdy Mendelssohn. Miscellaneous Piano Works -- Phantasie Op.28.