Kanye West debuted new songs during a night out on Friday (03.08.12).

The rapper was partying at New York's Dream Downtown with Leonardo Dicaprio, Erin Heatherton and 'The Hangover' director Todd Phillips and stunned fellow revellers when he pulled out a laptop and got DJ Reach to play the tracks he had on it.

One onlooker told the New York Post newspaper: ''He was dressed in black pants and a leather T-shirt. He danced and lip-synced [to his songs].

''The room looked stunned. People were standing around with jaws literally dropped.''

It was recently claimed that Kanye - who is in a relationship with Kim Kardashian - wants to make an album composed of animal noises.

The 35-year-old rapper experimented with them on his 'Watch The Throne album with Jay-Z and wants to take The Sounds further by developing them into an entire record.

A source said: ''Kanye's telling friends this is his next ingenious plan.

''He's become so obsessed with roars, barks and jungle noises that he's experimenting with putting them on a recording.''