The Backstreet Boys are an American boy band formed in Orlando, Florida in 1993. The group's members include A.J. McLean, Howie Dorough, Nick Carter, Kevin Richardson, and Brian Littrell. Their music is characterized by a mix of pop, R&B, and dance-pop, with harmonized vocals being a distinctive element of their sound. They have made significant contributions to the genre, with seminal albums such as "Millennium" and "Black & Blue", and are recognized as one of the best-selling music artists of all time.