"Baby"

"Baby" is a song by Canadian recording artist Justin Bieber, alongside rapper Ludacris. It was released as the lead single on Bieber's debut album, My World 2.0. The track was written by Bieber with Christina Milian, Christopher "Tricky" Stewart (who worked with Bieber on a previous single "One Time"), and R&B singer The-Dream, and produced by the latter two.