BTS , also known as the Bangtan Boys, is a South Korean boy band formed in 2010. The band consists of Jin, Suga, J-Hope, RM, Jimin, V, and Jungkook, who co-write and co-produce the majority of their material. Originally a hip hop group, their musical style has evolved to incorporate a wide range of genres, while their lyricism has focused on subjects including mental health, the troubles of school-age youth and coming of age, loss, the journey towards self-love, individualism, and the consequences of fame and recognition. Their discography and adjacent work has also referenced literature, philosophy and psychological concepts, and includes an alternate universe storyline.