The pair - who joined forces to create the album, which is set to be released on August 8 - were partying to their own tracks mixed by DJ Jus Ske and DJ Mick Boogie at The Darby restaurant in New York City alongside music artists, Fabolous, Nas, Adrienne Bailon, Lindsay Ellingson and Jessica White.
Must be nice.
Recently, there have been reports of tension between the two, which Jay-Z attempted to downplay on NYC radio station Hot 97 this week. Jay-Z remarked, "Kanye's my brother," he told Hot 97 DJ Angie Martinez, before admitting, "Yes we get on each other's nerves. That's part of pushing each other. ... People don't like to be pushed. It's annoying. ... So of course there are times when we're in the studio, we're yelling, but that's about it."
MTV News reports, that the album that has had the rap world buzzing for the first half of 2011, which was recorded in Paris, Australia and the Mercer Hotel in New York City, has resulted in a 12-track album with four bonus songs on the deluxe version.
Watch Video: Jay-Z Squashes Beef With Kanye West