A2O LITE debuted on October 13, 2026, with the digital single "NEON." The track draws openly on second-generation K-pop, pairing a heavy bassline and rhythmic melody with stacked vocal harmonies, high notes, a bridge, and a full dance break, and it runs longer than most current singles. The group is produced by Lee Soo-man, with Yoo Young-jin overseeing its music and performance, and "NEON" reached No. 1 on Melon's Top 100 chart within about a day of release.
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A2O LITE is a South Korean girl group formed by A2O Entertainment, with SM Entertainment founder Lee Soo-man as its key producer and longtime SM producer Yoo Young-jin overseeing its music and performances. The nine-member lineup draws on members from several countries and was launched alongside a boy group, A2O SOUL, as part of a single project. The two groups were introduced together at a global debut showcase, Welcome to Soulite, held at KINTEX in Ilsan on October 12, 2026, an event that marked Lee Soo-man's first official public appearance in Korea in more than two years. A2O LITE debuted the following day, October 13, 2026, with the digital single "NEON," which rose to the top of Korea's largest real-time music chart one day after release. A2O has said it plans to connect the two acts through a shared fictional universe linking their music, performances, and storylines while keeping each group's identity distinct.