18 Months

You've been listening to Calvin Harris for months now, whether you know it or not. The Scottish producer is the golden child behind such huge pop hits as Rihanna's "We Found Love" and Ne-Yo's "Let's Go." These tracks aren't even the standouts on Harris' third solo album, 18 Months, which spills over with big-name collaborations and singles that have been tearing up the clubs for the last few years.