After you beat the song "Jumpin Jack Flash" on Hard Rock mode, the games final credits will roll. Thereafter, youll be brought back to the games title screen. Head to the Options menu, and then to the Gallery. Within, youll see a small box on the bottom right corner with the letter J inside of it. Touch the J and the end credits will roll. You can do this any time you want to see the credits; and remember, you can touch the screen while the credits roll to get back to the previous screen.