With his Yeezus tour postponed until November 16th due to equipment damage, it seems Kanye West has got some free time on his hands. He recently performed 'Late' and 'New Slaves' at the OFWGKTA festival in California, and now he's popped up at Leonardo DiCaprio's 39th birthday party in New York City. He joined 2 Chainz for 'Birthday Song' and 'Mercy', and performed 'Good Life', 'Gold Digger', 'Runaway', 'Good Life', 'All of the Lights', and a remix of 'I Don't Like.' If this is what Leo had in store for his 39th birthday, sort of makes you wonder what he's got up his sleeve for his 40th, doesn't it? Watch some Instagram videos of the performance below.