Sat., Sept. 14, the Scratch Outs

Reggae has evolved so much since the 1960s. But even in the early days, several subgenres emerged—dancehall, dub, rocksteady—so what can be considered authentic Jamaican reggae is actually quite diverse. The local troupe the Scratch Outs aim to create traditional reggae music in a way that pays attention to all its forms. It's all in there: every variation on reggae that emerged in or before the 1980s. The band does reggae the way it used to be done, with a full band—and that includes an organ, horns and lots of group harmonies. Its communal love for the genre keeps it pure, even if they're not from Jamaica. 1400 Alhambra Boulevard, www.facebook.com/thescratchouts.