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SEOUL, Feb. 21 (Yonhap) -- K-pop phenomenon BTS will drop a new album, "Map of the Soul: 7," Friday evening, rocking the world music scene once again.
The upcoming 20-track album is the second part of its "Map of the Soul" album series, following "Map of the Soul: Persona," released in April last year.
Like its predecessor, "7" is a soul-searching musical journey, inspired by concepts developed by Swiss psychiatrist Carl Jung like the persona.
The new album is led by main track "ON," a captivating, powerful hip hop number whose 30-second preview audio was released early Friday morning via video-sharing platform TikTok.
Videos of fans' wild reactions to the sample flooded TikTok using the hash tag "onchallenge" within an hour of the preview's release.
"ON" explores BTS' devotion and sense of being artists, developed and refined through the band's eventful seven-year career.
The septet called the main track "a big diary (of BTS) over the past seven years."
"It's like a (shrunk-down) version of the whole BTS identity," member RM said on Apple Music's "New Music Daily with Zane Lowe" show Friday morning (Korean time).
"It's like a declaration that we have admitted our destiny," the BTS leader said in English, elaborating on the new lead song.
Looking back on the band's musical journey so far, he said "We did expand our musical expanse and everything has been upscaled (including the size of the audience) ... so everything got bigger and happier."
BTS prereleased three songs from the album: "Interlude: Shadow," "Outro: Ego" and "Black Swan." The band premiered the latter on American TV show "The Late Late Show with James Corden" last month.
Including the prereleased tracks and the main song, the new album has 15 brand new numbers, like "Filter," "UGH!," "00:00 (Zero O'Clock)," "Inner Child," "Moon," "Louder than Bombs" and "We Are Bulletproof: The Eternal."
"Filter" is a solo effort by member Jimin that delves into Jimin's growth from K-pop trainee to adult. On his own solo track, "Inner Child," V talks about an ordeal he faced, while Jin expresses his love for BTS fans -- the "Army" -- in "Moon."
Pop star Troye Sivan helped produce "Louder than Bombs."
BTS will separately release a special digital version of "ON" featuring Australian singer-songwriter Sia on Friday evening.
The album also contains five hit songs from "Map of the Soul: Persona," including "Boy With Luv," "Make It Right" and "Dionysus."
Along with the album, the septet will release a "kinetic manifesto film" for "ON" before appearing on American TV program "The Today Show" on Friday (U.S. time).
The band will then fly back to Seoul to host a global press conference in the South Korean capital on Monday.
Preorders for "Map of the Soul: 7" had reached 4.02 million copies as of Monday, a record in South Korea.
In a live video log on South Korean online broadcasting platform V Live on Friday, the BTS members talked about their new release.
"It's our comeback (to release a new album) after 10 months. We spent a record length of time on the preparations and practiced for the longest time," leader RM said.
"The album walks through the seven years since our debut ... carrying (the process of) confronting (one's) shadows that have been hidden and acknowledging them as part of one's own self," he said.
Member Jimin said the Army may feel proud of themselves, knowing that "ON" depicts moments BTS shared with the fans.
Member Jin hinted that the stage performance of "ON" involves "a large-scale performance," further boosting fans' anticipation for the new album and its lead song.