According to Billboard Japan report on Tuesday, BTSŌĆÖs new song ŌĆ£Film outŌĆØ has been chosen as the theme song of the Japanese film Signal. The media reported that this new song collaborated by BTS and the Japanese band Back Number was completed through an active exchange of thoughts, including Jungkook building up the new melody line after getting inspired by sound created by Iyori Shimizu, the leader and the vocalist of the popular rock band Back Number. The fact that this is the first time that Back Number has provided songs to other artists was revealed, raising more anticipations. Local media Nikkan Sports also reported, ŌĆ£The song is co-produced by Back NumberŌĆÖs Iyori Shimizu and BTSŌĆÖs Jungkook.ŌĆØ According to the interview released in the report, J-Hope shared, ŌĆ£ŌĆśFilm outŌĆÖ is a song that Back Number and our Jungkook made together.ŌĆØ Jungkook also expressed his excitement, saying, ŌĆ£I participated in the song, and I canŌĆÖt wait to play it for you.ŌĆØ Iyori Shimizu said, ŌĆ£This was the first time that I wrote a song for someone else to sing, so I was a bit nervous, but thanks to the efforts of the experienced staff and co-arranger UTA, the inspiration I received from the conversation with Jungkook, and each BTS memberŌĆÖs individuality and expressiveness, IŌĆÖm glad that we got to complete a very lyrical and intense song.ŌĆØ After the news hit the wire, ŌĆ£PROD JKŌĆØ ranked No.1 on TwitterŌĆÖs worldwide trend ranking and hashtags like ŌĆ£PRODUCE JUNGKOOKŌĆØ and ŌĆ£Jeon JungkookŌĆØ were also spotted on real-time trends in 67 countries, proving JungkookŌĆÖs jaw-dropping popularity. Meanwhile, Signal is slated for release on April 2.

Source (1)