There is no way to master this game in its current state. That seems a bit anti-leaderboard.
There are randomly placed power-ups, that react randomly and can completely rock your score or give you nothing useful.
I've played a song twice. The first time I got a pretty decent score, though I messed up quite a bit.
I tried the song again, and did much better and kept my routine standardized, so that I could improve upon what I had learned. Strangely enough I scored less while doing better and using my controllable power-ups in the same areas.
What happens is the middle powerups are so random that they can either make you or break you or just do nothing at all to help.
This makes beating top scores or even your old score just a roll of the die. Who the hell wants to base skill off of luck?
That's like saying you're a good poker player. You have absolutely no control over the cards, the only thing you can control is how much you lead on and your betting.
So you're a good bluffer or know how to read people. There's no such thing as being good at the game itself, because it is completely random. And even with these talents you can still lose if it isn't in the cards.
I'm playing Rock Band, not DnD or cards. Random no so enticing here. Especially when going for Gold or top scores.