It hasn’t felt like much of a summer, but BTS are determined to give us the song of the summer anyway.Fans went wild when the K-pop boy band and international sensations dropped their newest song and music video, Dynamite, at the end of last week: the video smashed YouTube’s premiere record with at least three million concurrent viewers.As BTS’ first song sung completely in English, the track is soaked in colour and nostalgia. It fuses the novelty of Old Town Road with the international flair…