Premise: Backstreet Boys . The Backstreet Boys have sold over 130 million records worldwide , making them the best-selling boy band in history , and one of the world 's best-selling music artists . They are the first group since Sade to have their first nine albums reach the top 10 on the Billboard 200 , and the only boy band to do so . A boy band ( or boyband ) is loosely defined as a vocal group consisting of young male singers , usually in their teenage years or in their twenties at the time of formation , singing love songs marketed towards young females .
Hypothesis: The Backstreet Boys are a pop group of young male singers.
Label: ENTAILMENT