This site introduces unknown Emanuel Bach (C. P. E. Bach).
Movements:
1st Movement: Arioso
2nd Movement: Andante
3rd Movement: Arioso
4th Movement: Allegro
The Sonatina in C Major H. 457/Wq. 103, composed in 1763, consists of two movements. The first movement is in a simple rondo form, and the second movement adds new variations to a keyboard sonata, incorporating string instruments, horns, and flutes.