Sound of BTS: K-Pop super band decode their success

Few names in the world of music today evoke global hysteria as the K-Pop super band BTS. With a following of 30.1 million on Twitter and 42.6 million on Instagram, the group, who made their debut in 2013, have smashed their own record with their latest track "Butter", which garnered 10 million views on YouTube in just 13 minutes upon release.

BTS, or Bangtan Sonyeondan, are a septet comprising Jin, Suga, J-Hope, RM, Jimin, V, and Jungkook. The band is also known as the Bangtan Boys and, like any celebrities worth the delirium they unleash, have a name for their fans, too. They call their ever-burgeoning fan base ARMY (the all-caps stylisation is perhaps meant to underline the frenzy).