the song "Feel This Moment" by rapper Pitbull takes it's main melody from a song remixed by who ?
Feel This Moment:  The song takes the main melody from "Take On Me" by A-ha, which, in turn, was written and composed by Morten Harket, Paul Waaktaar-Savoy, and Magne Furuholmen. Take On Me:  The self-composed original version was produced by Tony Mansfield, and remixed by John Ratcliff.
John Ratcliff