What makes Birthday by Jeon Somi notable?

The title track 'BIRTHDAY' achieved significant commercial success, peaking at number one on the Gaon Digital Chart. The song's lively concept and catchy chorus resonated with fans, solidifying Somi's presence in the K-pop industry as a solo act. Released on June 13, 2019, 'Birthday' marked Jeon Somi's debut single following her time on the reality show 'Produce 101'. This release positioned her as a solo artist after previously gaining fame as part of the project group I.O.I, showcasing her transition into a full-fledged K-pop star.