This week brings new albums from Katy Perry, Def Leppard, and Cody Karey, along with a new single for Justin Bieber. Katy Perry shows her maturity in sadder but wiser songs in her new album, 'Prism'. Def Leppard bring their over-the-top production to your house in a double CD / DVD collection titled "Viva Hysteria:Live at the Joint in Las Vegas". Cody Karey drops his debut album. Justin Bieber released a single titled, 'Hold Tight'.