Somi's first release after leaving JYP Entertainment, "Birthday" marked her debut on THE BLACK LABEL with a confident dance-pop track.
- The single was released on June 13, 2019, coinciding with Jeon Somi's 18th birthday.
- "Birthday" was co-written by Teddy Park, a prominent producer and songwriter associated with YG Entertainment and THE BLACK LABEL.
- The song is a dance-pop track with a prominent synth melody and a strong beat, showcasing Somi's vocal performance and charismatic stage presence.
Jeon Somi is a Canadian-born Dutch-Korean singer and television personality who debuted in 2015 as a member of the girl group I.O.I. She later pursued a solo career after the group's disbandment.
Tracklist
