“Child,” the launching track in SM STATION’s 2022 project NCT LAB, is NCT rapper MARK’s first officially-released solo single since his 2016 debut.

The song is written and solely performed by MARK himself, unlike the two previous SM STATION releases.

The “sentimental” rock-inspired hip-hop release features an electric guitar and bass synth. Like other tracks on NCT LAB, MARK said it was made “quite long” before release.