Big Sean has been hard at work in preparation for his upcoming album Dark Sky Paradise. During a show last night at the House of Blues, he brought out guest collaborators that were also at LA for the upcoming GRAMMY awards. These heavyweights included Kanye West, YG, Meek Mill, J. Cole, Chris Brown, Justin Bieber, Ty Dolla $ign and more. Watch the entire performance above and let us know what you think, and be sure to catch Sean at the GRAMMYs in a bit. Dark Sky Paradise comes out February 24.