Heavy and below are for pads
Challenge is for keyboard (They're NOT impossible. Just because you can't beat them with your LEET BMR GRAVITY SKILLS does not mean other people can't. I've AA'ed them.)

This song is Max300 from IIDX, obviously.

Song by Omega/Naoki (but who didn't know that)

Steps by Arch0wl (WOW REALLY?!?!?!)

BG by Radical J (Yes, he is all that and yes, you are not.)

Sex appeal by Arch0wl