He would compete in singing competitions in Ontario, Canada then post them on Youtube. The videos caught the attention of Scooter Braun, an agent and former So So Def marketing executive who helped Bieber gain an impromptu audition with the R&B star Usher. Impressed by everything he seen, Usher-along with Island/Def Jam Chairman L.A. Reid- quickly signed the then 15-year-old Bieber to a recording contract.
he was just chilling at his house when his mom would take videos of him singing and they would put them on youtube. there he was dicovered by scooter his manager, and then usher signed over him.