Harmonix and MTV Games announced that a four pack of songs from Lady Gaga, as well as a special Lady Gaga cover by Comedy Central South Park’s Eric Cartman will be added next week to the Rock Band Music Store.

Lady Gaga Pack 01 will include Bad Romance, Just Dance, Monster and Poker Face and will be available for purchase as Lady Gaga Pack 01 as well as individual tracks on Xbox 360 and PlayStation 3 system, and as individual tracks only on Wii. Additionally, a special version of Lady Gaga’s Poker Face, made famous by South Park’s Eric Cartman, will also be available in theRock Band Music Store next week. The track first appeared in the Whale Whores episode.