The track officially hit mainstream and rhythmic radio stations on January 26, 2010 .
The song's structure is famous for its repetitive, infectious hook; the word "baby" is repeated throughout the three-and-a-half-minute track—averaging once every four seconds. Impact and Record-Breaking Success justin bieber baby release date
. Wikipedia +3 Release Details The song saw a staggered global rollout across different formats and regions: January 18, 2010: Digital download release in the United States. January 26, 2010: Official impact on mainstream and rhythmic radio in the U.S.. January 29, 2010: Digital download release in Australia. February 22, 2010: Release in Germany and France. March 7, 2010: Digital download release in the United Kingdom. Wikipedia +3 Production & Impact The track was written by Bieber and Ludacris alongside R&B singer The track officially hit mainstream and rhythmic radio