It's a new music DLC Tuesday and this week Karaoke Revolution: American Idol Encore joins Rock Band in the new downloadable content funnery. Joy! As we mentioned last Friday, the Grateful Dead finally makes its Rock Band debut with a six track blowout allowing DLC purchasers to buy each of the six master tracks individually for 160 Microsoft points or as a pack for 800 points. Then we have the somewhat forgotten KR:AIE who is offering a massive twenty-one song DLC blowout today with various tracks ranging from Michael Jackson's "Beat It" to the B-52s' "Love Shack" all for 120 points apiece. Not too bad. We listed and conveniently broke down the new musical DLC for both Rock Band and KR:AIE after the break. Rock it fellow Deadheads!