I'm testing game with non-UK keyboard.
*Can't use menu at all. 'W' and 'A' and 'S' and 'D' are enter, every other keys do nothing. So I can start first song with level1, but nothing more. Game then works with wasd.
Typing name for score works same as menu. W,A,S,D are enter. Left+right moves left/right. Every other does nothing.

*Ctrl+backspace doesn't work (grabbed?)