A2 Musette in D:Bach
This piece, generally thought to be by one of J.S. Bach's sons, is found in a little manuscript book called Little Keyboard Book that is dedicated to his wife Anna Magdalena in 1725. This little anthology gives a fascinating glimpse of the music-making that took place in the Bach family's Leipzig home.
B2 Waltz number 13 from 24 Piano Pieces for Children: Kabalevsky
The Russian composer Dimitry Kabalevsky studied piano and composition at the Moscow Conservatory where he later taught. He was appointed professor in 1939. He composed a lot of music for young people including 24 Easy Pieces Opus 39 from which this waltz is selected. The Waltz features a clear right hand melody which should sing out about the chordal accompaniment.
C3 Petite Valse from Lazy Days: Chapple
Petite Valse is from a group of pieces called Lazy Days which I recommend. The composer Brian Chapple has written a variety of music including three small books of piano pieces called In The Pink, On the Cool Side and Lazy Days.