Watch: PAPA ROACH Joined By CARRIE UNDERWOOD For 'Leave A Light On' And 'Last Resort' Performances In Las Vegas

California rockers PAPA ROACH were joined by country-pop superstar Carrie Underwood on stage during their concert Saturday night (April 5) at MGM Grand Garden Arena in Las Vegas, Nevada for performances of the band's songs "Leave A Light On (Talk Away The Dark)" and "Last Resort". Video of her appea...