This is by far the hardest achievement in the game. You have to hit every note by pressing either , , , or . If you miss one note then you will not get the achievement. You also have to play on expert which is extremely difficult.
According to BrutishMuffin, who was the first person to ever obtain this achievement, the best way to get this achievement is to set Stillman College as your favorite team and then use them to get the achievement. The game makes the halftime show slightly easier if you use your favorite team. Even by using them, you still have to hit 522 consecutive notes to get a perfect score.