Collect some piano scores of Chopin.It also provides playback function, adjustable speed, and can be played separately from left and right hands. It is a useful learning tool for piano entry. Scores can be downloaded as PDF. Here is the content:

Op.7 - Mazurka
Op.9 No.2 Andante in E major
Op.10 Etude in C minor
Op.10 No.1 Waterfall (Etude)
Op.10 No.10 Swallow (Etude)
Op.23 No.1 Ballade in G minor
Op.25 No.1 Etude
Op.25 No.9 Etude
Op.25 No.12 Etude in C Minor
Op.27 No.1 Nocturne
Op.28 No.1 Prelude in C Major
Op.28 No.3 Prelude In G Major
Op.28 No.4 Prelude in E minor
Op.33 No.2 Mazurka in D major
Op.34 Grande Valse brilliante (Waltze)
Op.53 Polonaise in A major (Heroic)
Op.64 Improvisation from Secret (Waltze)
Op.64 No.3 Valse (Waltze)
Op.66 (posth.) Fantaisie-Impromptu in C minor
Op.67 (posth.) 4 Mazurkas
Op.69 (posth.) Waltz in B minor
Op.P2 No.11 Waltz in A minor