It is a song based on TRAP Music getting attention from the American hip-hop scene at the moment. The simple yet powerful drum sound is added on the main riff. It is not a familiar genre in popular music but the addictive melody and rough hook mesmerize the listeners right away. The lyrics talk about the ambition of the rookie group's challenge in K-pop industry. The song can be referred to as 2013 version of 'We Are Bulletproof Pt. 1'. Comparing the two songs, you'll be able to recognize how much BTS has grown up for the past three years.