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Dan Deacon’s mobile app creates a concert light show out of smartphones

While bands like Coldplay have used LED wristbands to turn their audiences into part of a concert’s light show, musician Dan Deacon is going a somewhat different route with a new app. Available for both iPhone and Android, the mobile app is designed not only to help create a crowdsourced lighting spectacle during Deacon’s concerts, but also produce sounds, serving as an extra musical instrument.