<P> It was available for digital download on January 18 , 2010 . The song received airplay directly after release , officially impacting mainstream and rhythmic radio on January 26 , 2010 . The song is uptempo R&B , blending together dance - pop and hip - hop elements , while using influences of doo - wop music . The song has received positive reviews from critics who complimented the song 's effective lyrics and chorus , and commended Ludacris ' part and the song 's ability to have an urban twist . </P>
<P> It was available for digital download on January 18 , 2010 . The song received airplay directly after release , officially impacting mainstream and rhythmic radio on January 26 , 2010 . The song is uptempo R&B , blending together dance - pop and hip - hop elements , while using influences of doo - wop music . The song has received positive reviews from critics who complimented the song 's effective lyrics and chorus , and commended Ludacris ' part and the song 's ability to have an urban twist . </P>
what year did baby by justin bieber come out
what year did baby by justin bieber come out
January 18 , 2010
January 18 , 2010