be taking a break as an artist: "I'm at a point in my life right now where I feel like I don't know where my career is going ... This is the reason that we called it 'Curtain Call' because this could be the final thing. We don't know." In April 2006, Proof, who was Eminem's childhood friend, was murdered. Eight months later, Eminem released a compilation album titled Eminem Presents: The Re-Up that featured Proof and other Shady Records artists. 2007–2009: Comeback and Relapse In September 2007, Eminem called New York radio station WQHT during an interview with 50 Cent, saying that he was "in limbo" and "debating" about when (or if) he would release another album: "I'm always working – I'm always in the studio. It feels good right now, the energy of the label. For a while, I didn't want to go back to the studio ... I went through some personal things. I'm coming out of those personal things [and] it feels good." Eminem appeared on his Shade 45 Sirius channel in September 2008, saying: "Right now I'm kinda just concentrating on my own stuff, for right now and just banging out tracks and producing a lot of stuff. You know, the more I keep producing the better it seems like I get 'cause I just start knowing stuff." Interscope confirmed that a new album would be released in spring 2009. In December 2008, Eminem provided more details about the album, entitled Relapse: "Me and Dre are back in the lab like the old days, man. Dre will end up producing the majority of the tracks on 'Relapse'. We are up to our old mischievous ways ... let's just leave it at that." According to a March 5, 2009, press release, Eminem would release two new albums that year. Relapse, the first, was released on May 19; its first single and music video, "We Made You", had been released on April 7. Although Relapse did not sell as well as Eminem's previous albums and received mixed reviews, it was a commercial success and re-established his presence in the hip hop world. It sold more than five million copies worldwide. During the 2009 MTV Movie Awards, Sacha Baron Cohen descended on the audience in an angel costume. He landed buttocks-first on Eminem, who stormed out of the ceremony; three days later, Eminem said that the stunt had