msftz, born Lee Sinae on December 24, 1997, in South Korea, is a singer-songwriter who initially performed under the name Chicken97 on SoundCloud before officially debuting as msftz. The name "msftz" is derived from the word "misfit," meaning "doesn't fit." She gained recognition by sharing her work on SoundCloud and made her debut in January 2020 with the single "ETERNITY." msftz collaborated on Hash Swan's "Indian Summer" and Crucial Star's "Telescope," and showcased her unique sound and emotions with songs like "Me Lately" and "bye bye i finally disappear from your life." Following this, she released her first mini-album, Belief, featuring diverse concepts and candid lyrics, which earned her much love with her appealing vocal tone. Her single "Woman," released in April 2026, entered Melon's Top 500 chart at number 4 on the same day. She has also participated in the soundtracks for the dramas One Day and Only One, solidifying her position as a skilled artist.