Young K headlines Sound Planet Festival 2026 — his first solo festival headliner slot

Young K is headlining Sound Planet Festival 2026. It's his first festival headliner slot since going solo.

The DAY6 bassist debuted in 2015 and launched his solo career in 2021 with mini-album Eternal. His second full-length solo album, YOUNGEST, dropped in July, led by the synth-pop title track Shut The Door. The festival run is the live chapter of that comeback cycle.

Rolling Hall dropped the final lineup on August 7. Four acts were added in this last wave: Young K, Skizo (who resumed activities with a new image this year), and two Japanese artists — Bachikanshikoku Ni Aisaretai and Iga Nana. Both were selected through DERENNO!? SAMASONI!? 2026, the rookie audition program attached to Summer Sonic 2026. The two Japanese acts are appearing as part of a global artist exchange project co-organized by Sound Planet Festival and Summer Sonic. The full lineup now sits at approximately 70 domestic and international acts.

Other confirmed names: Jjotto Mayo, YB, Cherry Filter, Kim Joon-soo (XIA), Xdinary Heroes, Urban Zakapa, Daemons Ear, Adios Audio.

Sound Planet Festival 2026 runs September 5–6 at Paradise City in Incheon. CEO Kim Cheon-sung said: "All lineups are finally complete. We are doing our best until the end to present a stage worthy of the long-standing interest and expectations you have shown."