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"Blood Sweat & Tears" is a song recorded in two languages (Korean and Japanese) by South Korean boy band BTS. It was written by "Hitman" Bang, Kim Do-hoon, RM, Suga, J-Hope, and Pdogg, with the latter of the six solely handling production. The Korean version was released on October 10, 2016, as the lead single from the band's second studio album, Wings (2016), by Big Hit Entertainment. Wikipedia