Get the Vevo App! http://smarturl.it/vevoappsDemi Lovato performs "Really Don't Care" from her album 'Demi' at Vevo's CERTIFIED SuperFanFest in L.A. on October 8, 2014.http://facebook.com/vevohttp://twitter.c om/vevohttp://instagram.com/vevohttp://vevo.t umblr.com