Three more songs are being added to the Rock Band Music Store next week and they're all special in their own way. "Jungle Boogie" by Kool & the Gang is the most important contribution to music of the bunch, but "Shout" by Tears for Fears isn't bad. Last (and almost certainly least), we have "Diamond Eyes (Boom-Lay Boom-Lay Boom)" by Shinedown.
All three of these songs were released previously via Rock Band Blitz, which is the only way I was likely to have ever heard Shinedown and now it won't leave my mind. All night long it's "Boom-Lay Boom-Lay Boom, hrm hrmhmhm you need." I could play the song in Rock Band 3 and fill in the blank spots in the lyrics, but then I would know all the lyrics forever. It's one of those "Catch-22" situations.
Oh, and the songs cost $1.99 (160 MSP) each. "Jungle Boogie" also features Pro Guitar and Pro Bass upgrades for $0.99 (80 MSP). Boom-Lay Boom-Lay Boom.