Kanye West - Kanye West Surprises Club-goers With Album Preview

The rapper was partying alongside Leonardo DiCaprio and his rumoured girlfriend, lingerie model Erin Heatherton, at Ph-D Rooftop Lounge when he decided to take control of the music.

According to the New York Daily News, West hooked up his laptop to the stereo system and played songs from his upcoming album Cruel Summer, which is due for release next month (Sep12).

Fans were said to have been "in awe" after West played a new track tentatively titled My Perfect B**ch, believed to be about his girlfriend Kim Kardashian.

An insider tells the publication, "(He raps) verses about his search for the perfect woman and how he has now found the 'perfect b**ch.'"

West ended his 45-minute set with his single Way Too Cold, which references Kardashian and includes a slight at her estranged basketball player husband Kris Humphries.