Mozart – Sonata No. 11, in A Major, K331

Mozart – Sonata No. 16, in C Major, K545

Wolfgang Amadeus Mozart composed a series of twelve variations under the French folk song “Ah! Vous dirai-je, maman”. This folk song is going to sound very familiar to you, since it has also been used in other cultures as children’s songs - its American version is Twinkle, twinkle little star. 

Joseph Haydn – Piano Sonata No. 62 in E-flat Major Hob. XVI:52

Joseph Haydn – Piano Sonata No. 33 in C minor Hob. XVI:20

Joseph Haydn – Piano Sonata No. 38 in F Major Hob. XVI:23

Ludwig van Beethoven – Piano Sonata No. 21, opus 53

Ludwig van Beethoven – Piano Sonata No. 23, opus 57

Ludwig van Beethoven – Piano Sonata No. 14, opus 27 no. 2

Prelude and Fugue in C Major, BWV 846 (WTC I)

J. S. Bach composed two books known as The Well-Tempered Clavier (Das Wohltemperierte Klavier).  Each of these books contains 24 pairs of preludes and fugues, in all major and minor keys.  The first book is dated from 1722, and the second one from 1742.