Right. I remember watching your SXSW performance and you did Get Rich, which is a classic and was great, but at the very end, you did the “Collapse Freestyle” and I was more excited to see that because I never thought you’d do that song.
50 Cent: You know what’s crazy? Em has the weirdest choices of what he wants to perform, when it comes time for us to collaborate all the time. I look at it like, we’ve got “Crack A Bottle.” We won Grammys for the record. Let’s do “Crack A Bottle,” maybe. It was a huge record.
“Collapse” is a huge record though.
DJ Drama: Shit was dope. Yeah, that was definitely the shit.
50 Cent: It’s certain points where he wants to actually say the verse. What he did performance-wise, he chooses it. I had to learn “Collapse,” right there, in front of you, at this SXSW rehearsal. I hadn’t heard that freestyle in so long, so I had to sit there and learn it.
I didn’t say my verse in its entirety. I said six bars of my verse, Em said the rap, and I said the last six bars at the end of him, because he wanted to say his verse and the edit that we had didn’t allow me to say my whole verse. So I said, “Play it again. OK. I know it. Let’s do it.” And then he wanted to do the “Love Me” joint.
Eminem called, while I was in the hospital. He was like, “Man, you got shot nine times. If you die over a cheeseburger, this shit is going to go down in history, man. You better get your ass out the hospital.” He cheered me up. He made me laugh, under circumstances that weren’t that funny.
Yeah, I couldn’t believe that you did “Collapse” and got Eminem to do it. But I really wanted you to do my favorite song, “Banks Victory.” It was like, “Damn. We couldn’t get Banks’ ‘Victory.’”
50 Cent: [Pauses.] You know what’s really interesting? No matter how much you do for an artist, I don’t think you can prevent there from being a point that the artist wants it to be about them, regardless of who it is. I think when you’re not an artist, and you’re an executive, you never have that conflict.
Source. It's a really cool interview, go read the whole thing.