Rick Ross and Jay Z have formed quite the alliance. The two rap titans first collaborated on Rozay's 2006 "Hustlin'" remix and have linked up several times since. Their latest, "Movin' Bass," is a Timabland-produced drug ode, which will help set the table for Ross' seventh solo LP, Hood Billionaire, on November 24.

For Rozay, "Movin' Bass" is another memorable Hov-collab -- though when he is asked to pick his favorite Jay memory, he's at a loss. "It's so many different ones," he said trying to recount all the times they've linked up in the studio.

"Free Mason" from Ross' 2010 Teflon Don is a standout, however; the MMG CEO just remembers watching Jay come up with his verse on the spot. For years, Jay collaborators have marveled at his ability to create complex rap verses in his head, without a pen and paper. We're figuring, by this point, Ross has seen him do this several time, but we imagine that it never gets old.

"From him being overseas and basically having them bring the studio to him to do verses, to watching him freestyle 'Free Mason,'" he told us. "It's just so many different things, the homie's iconic in so many different ways."

On "Free Mason," Jigga created a moment and lyrically confronted rumors that he was a member of the Illumnati. "Hear me clearly/ If y'all n--as fear me, just say y'all fear me/ F--k all these fairytales," he spit in disgust.

With their latest hook-up, Hov holds down the hook, while the Maybach Music boss peppers his verses with vintage drug talk. "You see the plaques on the wall, but the yayo still in the spot," Ross raps on "Movin' Bass."

"It's just a more uptempo, street-leaning; it's so street, we on that," Ross told us.