FIFTY FIFTY is set to take part in a drama OST.

On January 26, CJ ENM announced that FIFTY FIFTY will sing the theme song for tvN's Monday–Tuesday drama Spring Fever. The track, titled Still In Time, will be released later that day.

Still In Time is a medium-tempo acoustic love song. Gentle guitar melodies blend with warm string sounds, creating a soft, sunlit atmosphere.

The song delicately captures the emotional shift of Yoon Bom (played by Lee Joo-bin) as she gradually opens her heart to Sun Jae-gyu (played by Ahn Bo-hyun), whose straightforward affection drives the drama's romance. The warm, heartfelt lyrics stand out as a perfect match for a budding relationship.

Spring Fever is a romance drama that tells the story of a self-described outsider teacher with an icy demeanor and a man with a burning heart, delivering a fresh kind of fluttering chemistry.

The track was produced by composer Park Woo-sang, known for working on Hwasa's Good Goodbye, and is elevated by FIFTY FIFTY's distinctive vocal color.

Meanwhile, Spring Fever airs every Monday and Tuesday at 8:50 p.m. on tvN.