Diddy seems very serious about getting back into music. Before the highly-anticipated “Fight of the Century” between Manny Pacquao and Floyd Mayweather yesterday, Diddy hosted a party at SLS Las Vegas Hotel & Casino’s Foxtail Pool Club. To everyone’s surprise, Puffy brought out an old friend and collaborator, Ma$e, to tear the stage up just like they did in the old days. When Biggie’s hit song “Mo Money, Mo Problems” came on, Lil Wayne, who was in attendance, was invited up on stage to join the performance. Watch the video above.