It's also worth mentioing that the compatibility extends to microphones, which is a big plus. Anyone with a SingStar mic can integrate into RockStar, diminishing the cost of entry for these ensemble titles. If they were really smart they'd also support MIDI integration, allowing people to use drum pad systems as both gameplay devices and real musical instruments. Sharing the cost of a very expensive game among other titles and applications is bound to broaden the scope of these games.