After the two joined forces for Bieber's single "Baby" back in 2010, the music gods have once again reunited the duo of Justin Bieber and Ludacris for the second single off Believe, titled "All Around The World." Produced by The Messengers, you can expect the tune to be in heavy rotation on radio stations near you soon. Justin Bieber's sophomore album Believe is set to release June 19, and you can download the latest single now via iTunes. Give it listen down bottom and let us know your thoughts.