3. Calvin Harris & Ellie Goulding - 'Outside'
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The HOTTEST Collaborations You Need To Hear Today

3. 3. Calvin Harris & Ellie Goulding - 'Outside'
These two sure know how to make chart gold together. This is the second time the pair have scored a top ten hit together. 'I Need Your Love' in 2013, 'Outside' in 2014…let's hope for something each year shall we?