Katy Perry's 'Roar' Expected to Out-Sell Lady Gaga's 'Applause'

It looks like John Mayer was right when he said that Katy Perry’s”Roar” would be a huge hit According to Billboard Perry’s new single is set to sell 450000 downloads by the end of the week eclipsing the new single from fellow pop star Lady Gaga whose “Applause” is expected to…


About M Fund