[artist id="1230523"]Kanye West[/artist] has expanded his roster again, and like the most recent addition to his G.O.O.D. Music label, Pusha T, the new signing is another familiar face: seasoned hip-hop favorite [artist id="504157"]Mos Def[/artist].

The Brooklyn MC and West talk about the deal and break down their musical relationship in the October issue [article id="1647964"]of XXL, which comes out on Tuesday and features a Kanye[/article] cover story. And Mos Def makes an appearance on West's [article id="1648189"]G.O.O.D. Friday single "Lord, Lord, Lord,"[/article] along with Swizz Beatz, Raekwon and singer Charlie Wilson. Mos' decision to join G.O.O.D. Music follows the release of his last album, The Ecstatic, on indie label Downtown Records in 2009.

The rapper/actor and Kanye first collaborated on the Chicago MC's College Dropout, for "Two Words," and then again on "Drunk and Hot Girls" from Graduation. On "Lord, Lord, Lord," Mos Def opens the slow-moving track.

"Cool ruler standing still, sweatin' through the shade," Mos says. "He knew those lights only grew bright to fade/ Dead-wrong pageantry, lottery and games/ Sleight of hand provided by extravagant and fake."

With the signing of Mos Def, West continues his movement, pulling in MCs -- often with a devoted following outside the mainstream -- who come ready to break down creative barriers. Back in July, [article id="1643768"]Pusha wouldn't confirm or deny[/article] that he'd signed with G.O.O.D: "I mean, you know. I been to Hawaii. Hawaii is a nice place. Good music is made down there, ya know. So, yeah, I was there. I can't say too much about that."

Of course, that's no longer a mystery. [article id="1647697"]Pusha confirmed to MTV News at this year's VMAs[/article] that he was onboard with Kanye. The only question remaining is who else will be popping up on the bubbling label.

What do you think of Kanye bringing Mos Def into his G.O.O.D. Music fold? Tell us in the comments!