Photo: Brian Snyder/Reuters
Now your ticket entitles you to a show and a workout. At a recent concert in Somerville, Mass., audience members provided the power that ran the theater’s audio and lighting equipment. The performers, a group called Melodeego, relied on five listeners—three of whom are pictured—to crank up the Sustainable Sound system and generate about 100 watts each. The band says it will use a 10-bike version at concert dates through the summer.











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Willie Jones
Willie Jones is an associate editor at IEEE Spectrum. In addition to editing and planning daily coverage, he manages several of Spectrum's newsletters and contributes regularly to the monthly Big Picture section that appears in the print edition.
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