Rapper Kanye West treated guests at a London club to a special preview of his new material on Sunday night (06Jul14) after wrapping his third set at the U.K.'s Wireless Festival.

The Stronger hitmaker performed at the Birmingham leg of the annual event on Sunday and returned to London after the show to Dj a private bash, where he decided to showcase his latest music.

According to reports, West debuted around 20 tracks during his lengthy set, with one guest, Jason Powell, describing the new songs as "dark", "hellish (sic)" and "groundshaking".

West spent America's Independence Day weekend (04-06Jul14) as the headlining act for the entire Wireless Festival, pulling double duty at the London dates of event on Friday (04Jul14) and Saturday (05Jul14) after fellow rapper Drake cancelled due to illness.

However, both of the London shows were blighted by booing from the crowd after West launched into his usual rambling monologue about life in the public eye, and at Sunday's concert in Birmingham, he admitted the negative reactions had "hurt" his feelings.

He told the Perry Park audience, "The media wrote that people booed. And you know what? I'm not going to lie, I'm not invincible. It hurt me a little bit, because I knew how much of a good time everyone had."