PaRappa is one of those games PSP owners would love if the developers put just a little bit more effort into it. Many have questioned Sony's decision to simply make an updated port and put it on UMD, when a game like PaRappa would be an ideal candidate for PSone emulation. Siliconera reports that the game will offer something new for PSP owners: the ability to download new songs through Infrastructure mode. Strangely, the new songs will not affect the gameplay in any way: the levels and corresponding button presses will not change when you download these songs. Gyuh? Sounds strange. Hopefully, Sony's been hiding something from us. The game hits Japan on December 7th.