Fallen From the Sky(Photo via the band's MySpace page.)Pat yourself on the back for attending Saturday's early-evening, all-ages extravaganza at Revolution. It's sponsored by Music Saves Lives, a California-based group on its way to nonprofit status that aims to "create opportunities for people to save lives with simple contributions, and to teach the facts about the effects of what they contribute to." That's a long sentence, but more clearly, the group puts on shows whose proceeds benefit oth