Ryan Benjamin Tedder (born June 26, 1979) is an American singer-songwriter and producer. He is best known as the frontman of the pop rock band OneRepublic, though he has an independent career as a songwriter and producer for various artists such as Madonna, U2, Adele, Beyoncé, Birdy, Maroon 5, Demi Lovato, Ellie Goulding, B.o.B, Ariana Grande, Kelly Clarkson, K'naan, Carrie Underwood, Jennifer Lopez, Jordin Sparks, Leona Lewis, Gavin DeGraw, Sebastian Ingrosso, Gym Class Heroes, One Direction, James Blunt, Taylor Swift, Gwen Stefani, Far East Movement, Paul Oakenfold, and Ella Henderson.Tedder's production and songwriting work has proven successful commercially. "Apologize," "Bleeding Love," and "Halo" made it to the list of best-selling singles of all time. In early 2014, Billboard named him "The Undercover King of Pop" and featured him on the magazine's cover. During the last quarter of 2013, and the first of 2014, he charted four Top 40 hits.