Girls' Generation is a boy band.
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 . Girls' Generation . In Japan , they became the first non-Japanese girl group to have three number-one albums on the Japanese Oricon Albums Chart , and their three Japanese concert tours attracted a record-breaking 550,000 spectators , more than any other Korean girl groups .