Fe3O4: Forward is the fourth extended play by South Korean girl group Nmixx. It was released by JYP Entertainment on March 17, 2025, and contains six tracks, including the pre-release single "High Horse" and the lead single "Know About Me".
On February 19, 2025, Nmixx announced that their fourth extended play Fe3O4: Forward would be released on March 17, serving as the finale to the Fe3O4 series following their previous two extended plays, Fe3O4: Break and Fe3O4: Stick Out.[2] The promotional schedule was released the following day.[3] Concept photos and visual films were released from February 24 to 27.[4][5][6][7] On March 2, upon the reveal of the track listing, the lead single was announced to be "Know About Me".[8]
Two story films were released on March 3 and 4, with the latter being a performance visualizer for "High Horse", which was later released as a pre-release single on the same day.[9][10][11] On March 8, the animation story film titled The Confession of Midas Girl was released.[12] On March 10, the group released a commentary video titled The Journey of Fe3O4, explaining the various meanings behind the Fe3O4 series.[13] The acapella and original highlight medleys of the album tracks were released on March 12 and 13 respectively.[14][15] The music video teasers for the lead single were released on March 15 and 16.[16][17] With the album's release on March 17, the music video for the lead single was released.[18]
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