The Backstreet Boys, or BSB, is a boy band and pop group that rose to popularity in the late 1990s. Since then they have broken music and concert sale records, having sold more than 180 million albums (38 million in the United States.) to make them the highest-selling boy band on record. The group originally consisted of Nick Carter, Howie Dorough, Brian Littrell, Kevin Richardson, and AJ McLean.
New Kids On The Block (later NKOTB) is a successful boy band of the late 1980s and early 1990s. Assembled in Boston, Massachusetts, U.S. in 1984 by producer Maurice Starr; the members consist of brothers Jordan Knight and Jonathan Knight, Joey McIntyre, Donnie Wahlberg and Danny Wood. The group went on to sell over 70 million albums worldwide, generated hundreds of million of dollars of concert revenues, and roughly paved the way for acts like Backstreet Boys and *NSYNC.