Rollin Calvin Harris feat. Future & Khalid Download 'Rollin' on iTunes
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23 Of The Biggest Hip-Hop Feuds Of All Time
It was front page news when Kanye and 50 Cent went head to head in 2007 in the build up to the release of their new studio projects. It was Kanye's 'Graduation' that came out on top - by a lonnnggg way - but 50 didn't stay true to his promise to retire if he lost.