Music has its tribes, and with each new micro-genre there comes a defining look. One such genre has the look and name intertwined: Beard Metal — heavy metal that’s both sludgy and progressive, with sung vocals (opposed to the growling sort), played by dudes with a lot of tattoos and manicured beards. The undisputed kings of the genre are Atlanta, Georgia’s Mastodon. We asked bearded photographer Rob Menzer to take photos of the beards of Mastodon at last night’s sold-out show at Terminal 5, and of course, photos of Mastodon. Opening the show were Kvelertak and Gojira.