News BTS Jin To Sing Main OST For Jirisan, Release Date Of Theme Song Will Be Announced Soon BTS’ Jin will be singing the main theme song for the upcoming mystery drama Jirisan. This marks his first solo OST.
News BTS Trends On Twitter After Their CFs Appear Back To Back On TV Last night, BTS trended on Twitter again as Korean ARMYs were caught off guard when 6 different advertisements of the boys played on TV.