What does KESO^© mean?
It has been made of the first two letters of the two words: keyboard & songs.
ergo... KEyboard SOngs = KESO^©

^{The red oval background has the shape of a note, without the 'stock'.
The 'E' in KESO represents the keys as on a keyboard.
The opening in 'O' represents a 'window' in KESO, through which one can look (and feel/listen) to the music.}