A.C.E's WOW announces solo debut with single album 'LOW', out September 21

Kim Se-yoon, known as WOW, is stepping out on his own. The A.C.E main dancer and lead rapper unveiled concept photos for his first solo single album LOW, arriving September 21, 2026.

From group credits to solo stage

WOW has spent years writing inside A.C.E. His first credit came on "Take Me Higher" from 2018's A.C.E Adventures in Wonderland. He added "Holiday" and "Take Me Higher (Complete Ver.)" to UNDER COVER : THE MAD SQUAD, then "Clover" on HJZM : The Butterfly Phantasy. The repackage Changer : Dear Eris featured "Remember Us" and "Remember Us Inst. (Secret Voice Letter)". By 2024's My Girl : 'My Choice', he'd moved into composition, earning a writing and composing credit on "Facetime."

He also appeared on bandmate Park Jun-hee's September 2025 album The First Day & Night, contributing vocals and rap to "Tattoo (With Jiham, WoW, BK, Yuchan) (12:30)."

The five-member group behind the solo

A.C.E—Lee Ji-ham, WOW, Park Jun-hee, Kim Byung-gwan, and Kang Yu-chan—debuted in 2017 with CACTUS (선인장) and Callin'. The group released five mini albums and a repackage, Changer : Dear Eris (2021). WOW completed mandatory military service between September 2021 and June 2023.

(Off stage, he goes by "척추 미남" and "마포구민 체력왕," and has said he plays guitar with improvisation as his long-term goal.)

LOW arrives September 21.