1. "We Found Love" (feat. Calvin Harris) (2010)
The original Calvin Harris demo for this rave epic floated around for months: Leona Lewis recorded a version but didn't release it, and Nicole Scherzinger rejected it, before Rihanna turned it into a global phenomenon that topped the Billboard Hot 100 for 10 weeks. "I slept on it," Scherzinger admitted to U.K. magazine Notion in 2013. But in all fairness to the former Pussycat Doll, no one could have brought the same Technicolor joie de vivre to this big room extravaganza as Rihanna, whose near-falsetto voice summons peak-time memories on the dance floor. The chorus – "We found love in a hopeless place" – got a literal interpretation in Melina Matsuoka's controversial video, which found Rihanna lost in a tumultuous and toxic relationship.