Funkmaster Flex just keeps dropping bombs on exclusive after exclusive. The newest unreleased song to fall in his lap is one that will be featured on the soundtrack to the upcoming Ben Stiller and Eddie Murphy film, Tower Heist, which is due out in theaters November 4. This isn't just any 'movie soundtrack rap song,' though; it's a collaboration between two of rap's biggest names. The track, appropriately titled "It's a Tower Heist," showcases Nas and Rick Ross exchanging verses over a beat by legendary producer Salaam Remi, who you probably know of from his work with Amy Winehouse, The Fugees and many of Nas's most classic songs. Since this is only the second time Ross and Nas have collaborated together, how do you feel about their on-record chemistry?