Photos: Rockstar Mayhem Festival Toronto, 2015 (including Slayer, Hellyeah, The Devil Wears Prada, + more) Concert Photos - July 21, 2015July 21, 2015 SHARE:FacebookTwitterLinkedinTumblrPrintemailSlayer Hellyeah The Devil Wears Prada Thy Art Is Murder Whitechapel King Parrot Feed Her To Sharks Kissing Candice Follow updates from Rockstar Mayhem Festival here. Photos by Raven Benwait |@ raven_artista