An offshoot of the Denmark-based Boom Clap Bachelors massive, Quadron were an avant R&B (with an occasional nudge toward folk-soul) duo formed by multi-instrumentalist/producer Robin Braun (aka Robin Hannibal, also one-half of the duo Owusu & Hannibal) and vocalist Coco O. In 2009, Quadron began iss...

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