Tha Carter IV is Weezy's first album since being released from prison last November (and his first full-length effort since last year's misguided Rebirth). This time, the rapper is pulling out all the stops: rumored cameos by Drake, T-Pain and Kanye West plus a song, "6 Foot 7 Foot," that borrows from an unlikely source: Harry Belafonte's "Day-O." The album has already been pushed back once; hopefully, the tentative June release date will stick. 6/21