Rock Band served as the tail end of EA's E3 press conference, and they made sure to save a few announcements for last. CEO of Harmonix, Alex Rigopulos announced that Rock Band will receive downloadable content every single week after its initial release. Even better, he announced that players not only be able to download single songs and multi-song packs, but entire albums. The first album that will be available for download is The Who's Who's Next. Finally, Rigopulos announced that Rock Band musicians will at last be jamming to Metallica. It was revealed that Metallica's "Enter Sandman" will ship with the retail version of Rock Band with many more career-spanning tracks coming as downloadable content.