Harmonix is celebrating Rock Band's 5th anniversary—and the release of Rock Band Blitz on PSN and XBLA—with a massive sale on tons of DLC songs, packs and albums.

A press release sent out today claims that there are over 3,800 tracks available for the entire franchise as a whole (good luck fitting them all on your hard drive, though). Of those, 1,100 are on sale for as much as 50 percent off starting today. So if your Rock Band library is starting to feel a little stale, now is the perfect time to pick up some new tracks and reinvigorate it.

For the full list of discounted DLC check out this enormous infographic.