Kanye West was the not-so-secret performer at Samsung's Galaxy Note II launch party last night (Oct. 24), in New York City, where he treated fans to an hour-long set with a very special guest.

The event, which took place at Skylight at Moynihan Station, boasted an elite audience including T.I., Meek Mill, French Montana and Kid Cudi, but when Kanye finally took the stage at 11 PM, it was clear who the real star of the evening was.

Performing a selection of his new tracks, from "New God Flow and "Cold," to "Can't Tell Me Nothing," and even early cuts like "Jesus Walks" and "Through the Wire," the G.O.O.D. Music boss showcased his varied, impressive catalog, before bringing out surprise guest 2 Chainz.

The ubiquitous Atlanta MC and 'Ye then ran through their collabs "Birthday Song," and "Mercy" to end the evening. Check out footage of the performance below.

Watch Kanye West Perform at the Samsung Galaxy Note II Launch

See 15 of the Best Hip-Hop & R&B Albums of 2012 (So Far)

%VIRTUAL-MultiGallery-163137|167008|161082%