Today marks the release of Rock Band’s first true expansion, dubbed AC/DC Live: Rock Band Track Pack. This collection of music is entirely comprised from the band’s Live at Donnington show. This includes 18 live tracks, which adds up to over 100 minutes of gameplay (more if you decide to play through on different instruments). I’ve spent the last several days rocking out with the expansion, so it’s time I shared my experiences with you. Hit the jump for my full review of the game.