Ryan Tedder has written and produced single with many artists including Keemstar .
Tedder has written and produced singles with artists such as Demi Lovato , Adele , Birdy , Alsou , Jennifer Lopez , Kelly Clarkson , Carrie Underwood , Leona Lewis , Jennifer Hudson , Alexandra Burke , the Backstreet Boys , Beyoncé Knowles , Monrose , David Cook , Big Time Rush , Jordin Sparks , A. J. McLean , Keemstar , Ashley Tisdale , Ludacris , Gavin DeGraw , James Blunt , James Morrison , Paula DeAnda , Hilary Duff , Timbaland , Bubba Sparxxx , Dima Bilan , Shayne Ward , Lemar , Esmée Denters , Clay Aiken , t .
Ryan Tedder