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The song was pre-released as a digital single on August 17, 2018, along with an accompanying music video directed by Naive Creative Production, the team behind most of Twice's previous music videos. The song was officially released with the album of the same name on September 12.
"BDZ", an electropop song, was composed by J. Y. Park, with the Japanese lyrics penned by Shoko Fujibayashi and Yu Shimoji. It is about "moving forward and pushing away obstacles like a bulldozer" and "conveys feelings of strength and starting anew." Park stated that it is "a song for fans and Twice to sing and enjoy together."
Korean version
The Korean version of "BDZ" was released on November 5, 2018, as the seventh track of Twice's sixth extended play (EP) Yes or Yes. The group performed the song during their comeback showcase for the EP, as well as on South Korean music programs.
^ "TWICE「BDZ」Music Video解禁&先行配信スタート!". Twice Official Japanese Website (in Japanese). Warner Music Japan. Archived from the original on August 17, 2018. Retrieved December 23, 2018.
"星野源、朝ドラ主題歌「アイデア」は「名刺になるような楽曲」". Oricon News (in Japanese). Oricon ME Inc. August 31, 2018. Archived from the original on September 13, 2018. Retrieved September 13, 2018.
"TWICE、日本で初めてのアリーナツアー開幕". Barks (in Japanese). Japan Music Network. September 30, 2018. Archived from the original on October 2, 2018. Retrieved October 1, 2018.