I found a band called Ashes Forever and they would love to be in Rock Band and I was wondering if someone would take them up on their offer. They love Rock Band and I asked them and they said just tell us what they need to do. They aren't signed either. I found them on BandCamp then on Facebook.
Little info about them: They are a Post Metal band and it consists of 2 members. A lead vocalist and lead guitarist and a drummer.
Link to Facebook page: http://www.facebook.com/AshesForeverBand?sk=info
Link to BandCamp:http://ashesforever.bandcamp.com