: It's entirely possible to reach the score cap of 9,999,999 points on the final song of the second game. Pinball Scoring to it's logical extreme. *
Although, the game does still keep track of how many points you actually got: it gets calculated into your Total Score, which is the sum of all your high scores on every song on every difficulty. With some math, you can even figure out exactly how many points you got, or at least how many points you got for Hard and Insane on this song combined.
Let's talk about some of the songs, shall we? The final song of the first game, "Ready Steady Go", deserves a mention: all of the people who you previously helped throughout the game (with the exception of Ishida Tetsu and Cleopatra) come Back for the Finale and gather together with all the people of not just Japan, but the entire EARTH, to stop a meteor from wiping out all of mankind using a Combined Energy Attack formed from the power of cheering. The song is challenging enough that you really feel good if you do well on it, and the scenes of all the people from all over the world cheering, their energy auras getting bigger and bigger, will be sure to pump you up, and the "PLEASE! TRUST ME!" at the end can sort of be vaguely interpreted as a congratulations for making it through the song if you stretch your imagination a bit.
"Taisetsu na Mono" from the first game also. Nowhere else in the history of mankind has an election been so badass and Hot Blooded, with the two candidates doing everything (up to and including ramming each other off the road) to secure the public vote, set to one of the most high-energy songs in the entire game.
In "Guts da ze!!", the horse (who has only won 1 out of 49 races in his history) comes up from dead last to first place in the final stretch. But that's just the beginning - the horse then proceeds to throw off its rider and chase down the thief all on its own.