A BTS concertgoer admits that she wrote Heart on the Window for Jin's solo album Happy, realising a five-year ambition

Five years ago, @itsshorelle attended BTS’s legendary concert at Wembley Stadium, a life-changing moment. At the time, she was a university student in London, striving to establish herself as a K-pop songwriter. Although she was passionate about the genre, K-pop had yet to gain widespread recognition, and she faced scepticism about her ambitions. But that night at Wembley ignited a new resolve. Inspired by BTS' electrifying performance and the profound connection she felt, she made a promise to herself: one day, she would write a song for them.