ok tried it yesterday. my first Early Access game actually.
the main menu is bad. instead of going screen to screen in Audiosurf, they tried putting all of it on the main menu. selecting mode, songs and theme. and the play button is on the bottom bar and hard to see for first timer. looks messy.
for controls, when i used keyboard, the tutorial showed controls for xbox360 gamepad, and vice versa

. graphic setting is on the launcher and not much option.
the new mode, Waveboard is quite fun, though need to practise alot. still haven't unlock other available modes.