Justin Bieber - Baby ft. Ludacris (Official Music Video)

Justin Bieber - Baby ft. Ludacris (Official Music Video)."Baby" is a song by Canadian recording artist Justin Bieber. It was released as the lead single from the latter half of Bieber's debut album, My World 2.0. The track was written by Bieber with Christopher "Tricky" Stewart and Terius "The-Dream" Nash, both of whom worked with Bieber on "One Time", and also by R&B singer Christina Milian and labelmate, rapper Ludacris.

Music video by Justin Bieber performing Baby feat. Ludacris.The song is predominantly upbeat, featuring Bieber's R&B vocals over a backdrop containing a dance infused beat, full of keyboard and "disco string" synths.The song was a commercial success, peaking at number one in France and Scotland, and charting in the top ten of the United Kingdom, Canada, the United States, Australia, Norway, Japan, Ireland, Hungary, Belgium (Flanders), Slovakia and New Zealand. The accompanying music video takes place in a mall/bowling-alley setting. The video features several cameos such as Drake, Lil Twist and Tinashe, in which Bieber chases after a girl. As of May 2013, the song has sold 3.9 million digital downloads in the United States.