Backstreet Boys are a Grammy-nominated American pop group.
They were the first group launched by fallen boy band mogul Lou Pearlman.
They have had 13 Top 40 hits on the Billboard Hot 100 and have sold 120 million albums, making them the best selling boy band of all time; they were number 1 in concert and album sales from 1997-2005 (when they earned $533.1 million).
Two of their albums - Millennium and Backstreet Boys - are among the top 40 most popular albums of all-time.
After returning to the music scene in 2005, their sound changed dramatically, incorporating only live instruments and a more guitar and piano driven pop rock sound.
The four-member group consists of Nick Carter, Howie Dorough, Brian Littrell and A.
Original member Kevin Richardson left the group on June 23, 2006 to begin a family, but the four-piece refused to rule out a possible return for the singer.