Daniel Allan-Chapkovsky and pianist Kirill Lysenko perform
"Gnossienne No. 1" by Erik Satie.
Don't ask me what the word "Gnossienne" means, nobody knows, Erik Satie himself made up this word.
In general, he invented a lot of things. For example, he came up with background music (furniture music), music that is not meant to be actively listened to, it is specifically written to serve as a backdrop.
Now there is a lot of such music, in supermarkets, elevators, hotels.
However, he invented this long before supermarkets appeared, and people didn't understand him at the time.
"Gnossienne No. 1" is an example of such background music.