Rock Band developer Harmonix has announced next week's downloadable tracks for its mega-hit music-rhythm game. Two packs are available. The first is the entirety of a previously promised full album, and it's accompanied by the Rock Band Tour 4-Pack in honor of the concert tour promoting this weekend's release of Rock Band 2.

The following tracks from Megadeth's Peace Sells--But Who's Buying? will be available collectively for 880 Microsoft Points ($11) or individually for 160 Points ($2):

• Wake Up Dead
• The Conjuring
• Devil's Island
• Good Mourning / Black Friday
• Bad Omen
• I Ain't Superstitious
• My Last Words

The title track, missing from this pack, is on the Rock Band 2 disc, which hits Xbox 360 this Sunday, September 14 and PlayStation 3 in October.

The Rock Band Tour 4-Pack features bands on the concert tour of the same name. The tracks will be available in a 320 Microsoft Point ($4) bundle or individually for 80 Points ($1).

• 'One of Those Nights' by the Cab
• 'Hands Down' by Dashboard Confessional-
• 'She's a Handsome Woman' by Panic! At the Disco
• 'Natural Disaster' by Plain White T's

All of the tracks above are master recordings, and will carry those prices until the week of October 14, at which point the pack will run 560 Microsoft Points ($7) or 160 Microsoft Points ($2) per song.

The above songs will be available in the Xbox 360 Rock Band Store on Tuesday, September 16 and on PS3 Thursday, September 18.