IGN's Tal Blevins and Jeremy Dunham share their impressions on Rock Band.
Harmonix also revealed a bit about the various game modes. In addition to the basic "Tutorial" feature that you'd expect, there's also a "Practice Mode" that allows users to pull out any segment of a song to be played at whatever speed they want. "Solo Tour Mode" lets players pick a single instrument and hit the hitchhiker circuit for what's essentially a single-player career, while "Band World Tour" is undoubtedly the game's meatiest addition. In it, you'll be able to form your own band online (or off) and move from small town gigs all the way to stadium-sized locations while earning "fame and fortune" to get the stuff you need. Luckily, if any of those options sound too time-consuming for you, there's also a "Quickplay Mode" for easy single-song jamming.