Jan Smith is Justin's vocal coach. She met Justin in 2008. Usher set Justin up with Jan Smith – Mama Jan – who also happens to be his vocal coach. She only takes on big acts, but she took Justin on because Usher pleaded his case.[1]

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  1. Bieber, Justin (October 12, 2010). "Justin Bieber: First Step 2 Forever: My Story". HarperCollins. ISBN 978-0-06-203974-3.