Imagine what it must be like to be a rock music legend and hear other people singing (or trying to sing) your songs at a karaoke bar. It's probably not something most stars would want to spend their time doing, but Jon Bon Jovi did to launch a new fundraising campaign to help end hunger. Bon Jovi went undercover as a bartender at a karaoke bar, serving the patrons and then revealing himself by joining in the karaoke himself.

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