"Baby" is a song made by Canadian recording artist Justin Bieber. It was made available for online purchases since January 18, 2010. It is a pop song with elements from R&B (rhythm and blues) and hip hop.
As of September 2019, the official music video is currently the 33rd most-viewed video on YouTube. As of September 2019, the official music video is the second-most disliked YouTube video (YouTube Rewind 2018: Everyone Controls Rewind is the first-most dislike YouTube video). It was once the most-viewed from July 12, 2010, when it surpassed the music video for "Bad Romance" by Lady Gaga. It continued to be the most-viewed video until November 24, 2012, when it was surpassed by the music video for "Gangnam Style" by Psy.
In the official music video, Justin Bieber is at a bowling alley nearby a shopping mall. During the music video, he chases after a girl and encourages her to become his girlfriend.