Mark Ronson & Bruno Mars - 'Uptown Funk' (7 Weeks)
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Every Big Top 40 No.1 Single Of 2015
28. Mark Ronson & Bruno Mars - 'Uptown Funk' (7 Weeks)
It was the standout hit at the end of 2014 and captured the first No.1 of 2015 too. The track was released early after Fleur East performed the track on the X Factor.