1 Jessie J Performs 'On My Own' From LES MISERABLES & Reveals Passion For Musicals Video

Jessie J Performs 'On My Own' From LES MISERABLES & Reveals Passion For Musicals

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Pop star Jessie J recently posted a particularly theatrical clip of an impromptu post-concert crooning session in which she performs a well-known musical theatre staple alone onstage, a capella, to the awe and excitement of some friends.