R&B singer Jason Derulo has been forced to turn down a collaboration with hit British boyband Jls - because he's too busy writing tracks for his own album. The U. K. band has enjoyed stellar chart success since appearing on Simon Cowell's talent show The X Factor in 2008 - racking up four number one singles and two top-selling records. The...
ContactMusic — R&B singer Jason Derulo has been forced to turn down a collaboration with hit British boyband Jls - because he's too busy writing tracks for his own album. The U. K... more info