Katy Perry Roars With Ellie Goulding, Sara Bareilles, And ALL Her Fans!

wochit entertainment
October 24, 2013 AT 1:08 PM
As if Katy Perry's roar wasn't loud enough! The powerhouse vocals got some very talented help for her live performance of Roar at the Hollywood Bowl. The night of amazing music in the outdoor theater ended with a perfect collaboration of vocals between Tegan And Sara, Ellie Goulding, Sara Bareilles , Kacey Musgraves, and her songwriting partner Bonnie McKee .