Son Jeong-hyeok (; born March 12, 1994), known professionally as Demian (), is a South Korean singer, songwriter and actor. He made his music debut with the single "Cassette" in March 2020, and made his acting debut in 2023, playing the role of Kei in Soundtrack 2.
Life and career Pre-debut Demian was born and raised in South Korea, and started singing in elementary school when he joined a singing quartet. In 2008 he studied abroad in Canada for middle school where he was introduced to alternative forms of music. What started as a hobby became a serious career choice while serving in the military as a university student at Korea University's Department of Business Administration when he was 22. He initially released music on SoundCloud before signing with Sony Music Entertainment Korea during his fourth year of university. His stage name is based on the 1919 book of the same name.
2020—present: Success with debut single "Cassette" and acting ventures Demian made his debut with the single "Cassette" in March 2020. The single topped the iTunes K-pop charts in 4 countries including South Africa, Luxembourg, and Italy and gained 2 million streams on Spotify within the first 5 months of its release. This success was followed with the release of the single "Karma" in June, which entered the Top 10 of the same charts in 8 countries. His third single "Yes" was released in August that same year. Demian then released his first and only single album A Blue not Blues in March 2021, with the title track "Love%" featuring Dawn, who he reached out to following the song's completion.
Demian made his first feature on the single "Room 201" by Steven in February 2022, then took a break from releasing music following the release of "Basement Boy" in May 2022, focusing on acting which he initially took lessons for to aid in producing music. He made his acting debut in the 2023 web series Soundtrack 2, where he played the role of Kei. Prior to this, his contract with his previous company had ended and he signed with MSTeam Entertainment. Demian plays the role of Jung Gi-jeon in the television series Absolute Value of Romance, which premiered in April 2026.
Discography Singles As lead artist + List of singles as lead artist, showing year released, and album name Title Year Album "Cassette" 2020 rowspan="3" "Karma" "Yes" "Love%" 2021 A Blue Not Blues "Basement Boy" 2022
As featured artist + List of singles as featured artist, showing year released, and album name Title Year Album "Room 201" 2022 A Youth in 1969
Soundtrack appearances + List of soundtrack appearances, showing year released, and album name Title Year Album "A Simple Man" 2023 Race OST "Memory of Us" 2025 You Are the Apple of My Eye OST
Composition credits All song credits are adapted from the Korea Music Copyright Association's database unless stated otherwise. + List of songs, showing year released, artist name, and name of the album Title Year Artist Album Lyricist Composer Producer "Cassette" 2020 Himself rowspan="3" "Karma" "Yes" "Love" 2021 A Blue not Blues "One More Night" "Room 201" 2022 Steven A youth in 1969 "Basement Boy" Himself "Meaning of Love" () 2024 NCT 127 Walk "Born To Love You" () 2025 Gyubin Flowering "Midnight Special" Fifty Fifty Day & Night "Love Will Find a Way" () Young K Good Boy OST "Love Chat" Evnne Love Anecdote(s) "Mako" "Summer Rain" Aimers Full Count "Truth & Dare" () "Scent" Xlov Uxlxve "Drip Drip" "Red (Beggin')" Verivery Lost and Found "Hard to Love" () 2026 Sondia Positively Yours OST
Filmography Film Year Title Role 2025 You Are the Apple of My Eye Ahn Sung-bin
Television series Year Title Role Notes 2023 Soundtrack 2 Kei 2024 Bad Guy's Guide to Love Seong Ji-hun 2025 Love.exe Park Chang Guest 2026 Absolute Value of Romance Jung Gi-jeon
Television shows Year Title Role Notes 2021 Superband Contestant Season 2 2022 Never a Dull Moment Himself 2022–23 Love Alarm Clap! Clap! Clap!
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