In Rock band 2, is livin' on a prayer by bon jovi a song u start out with or do u have to unlock it?

I dunno. That's a video game. This is the music section. Not the video game section. If you want to know how to unlock a video game you'd get better answers in the Video Game section. If you want to know anything about the song Livin' On A Prayer or Bon Jovi, then that's what we talk about in the R & P section and the video gamers talk about video games in the video game section. Of course, if I knew I'd tell ya! LOL! I just don't know...lol