American rapper Curtis James Jackson III or 50 Cent, as he is known, has slammed his singing rival Kanye West in a new song by poking fun at him.Jackson was a little peeved with West, who released 808s and Heartbreak last year, and then came out with a new sound that did not follow his rap tune.

He criticised West’’s change of tune at the time, and has now put his feelings about the latter’s music in a new track called Heartless Monster.

According to Contactmusic, 50 Cent raps in the song: It’s the return of the heartless monster/I should give you n ers a whole R+B record/808s and my heart’’s broken/I hate all these fkers with the rainbow colours on.The track is set for release on his upcoming LP Before I Self-Destruct.