DAMN, that's guy's good!
I can't say for sure which version of Pop n' Music that is, but I do know it's the same as the machine that's been in the Wired at Sakura Con the last 2 years. (Same cabinet art.)
That hardest part I have with that game, is just trying to learn the controls. I keep forgetting which buttons are top row, which are bottom... not good when you need to go fast. (Plus, I seem to remember the Sakura Con machine not having the control button color match the screen prompt colors, but I'm not sure.)