Yeji, the leader of ITZY, has made her solo debut with the release of her EP Air on March 10, 2025. The title track "Air" is accompanied by a dynamic music video, showcasing Yeji's powerful performance and artistic vision. The song features a synth-pop sound with a catchy bassline and addictive hook. The EP also includes three other tracks: "Invasion," "Can't Slow Me, No," and "258." Yeji's solo debut is a fresh step in her career, highlighting her musical versatility and unique style.