retro

Justin Bieber — “One Time” (2009).

Released as Justin Bieber’s debut single, “One Time” was basically the beginning of Bieber fever. The song introduced him to a huge audience with that sweet, early-2000s-meets-2010s teen-pop sound that instantly takes you back to his My World era.

The music video made it even more nostalgic, with Justin throwing a house party and Usher making a cameo — such a perfect snapshot of how young he was when everything started taking off.

“One Time” became Justin Bieber’s first song to chart on the Billboard Hot 100, eventually reaching the Top 20 in the U.S.