Mozart – Sonata No. 10, in C Major, K330

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

I would recommend this sonatina as a nice introductory work to learn preceding studies of more advanced sonatas.