This is a solfège composition by French composer Armand Bournonville, one little known French composer who wrote music for piano and voice. He was a professor at du Conservatoire National de Paris in the early 20th century. This piece is in E major.
In music, solfège or solfeggio or 视唱练耳 in Chinese is a music education method used to teach aural skills, pitch and sight-reading of Western music.
Wish you all a good weekend!
Wu Fei