Justin Bieber - One Time Official Video -

Mentor Usher makes a cameo at the beginning, leaving a young Bieber in charge of his house while he goes to the studio.

Bieber ignores the "don't have people over" rule and hosts a party for his friends. The scenes alternate between him playing video games, hanging out by the pool, and performing for the camera. Justin Bieber - ONE TIME Official Video

This was the lead single from his debut EP, My World . Mentor Usher makes a cameo at the beginning,

It is widely remembered for establishing "Bieber Fever," with the singer's purple hoodie and side-swept hair becoming iconic symbols of 2009 pop culture. hanging out by the pool