Accumulate over five hours of game play.
Play through all the songs once. Then, hold Select while choosing a song at the stage selection screen.
Note: This cannot be done in beginner mode.
Press L1, Up, L1, Up, L1, Up, L1, Up, Triangle, Start at the title screen.
Press R1, Triangle (x2), Left, R2, Triangle, L2, L1 + Start at the title screen.
Accumulate the indicated amount of game play to unlock the corresponding song type:
Cute: 2 hours
New Fork: 2.5 hours
Sexy Girls: 3 hours
J. Garage Pop: 5 hours
Lounge: 4.5 hours
J-R & B: 4 hours
Akiba: 6 hours
Live: 6.5 hours
Avangrade: 7 hours