Self-dubbed endangered-guitar practitioner Hans Tammen presents his Dark Circuits Festival, a winding tour through contemporary electronic music. And if you're envisioning dance-fueled DJ bacchanals, this is a whole other ballgame. During a crowded week of shows, you'll hear from artists who work in circuit-bending, no-input mixers, turntablism, analogue circuitry and other esoteric media. All shows in the series are either free or cheap, so get out there and explore. See darkcircuitsfestival.com for the full scoop.