Rock Band: Unplugged Bonus instruments
Successfully complete the indicated task to unlock the corresponding instrument:
- Backbone guitar: Successfully complete the Rolling Stone Rock Immortals List.
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Rock Band: Unplugged Cheats, Codes, Cheat Codes, Walkthrough, Guide, FAQ, Unlockables for PSP
Rock Band: Unplugged Bonus instruments
Successfully complete the indicated task to unlock the corresponding instrument: