Singer Kwon Jin-ah and Lim Yoon-sung will participate in the fourth OST of the JTBC drama 'Waiting for the Longitude'. This OST will be released on January 4 at 6 PM. Kwon Jin-ah's song 'My Universe' is in the folk rock genre, characterized by emotional acoustic guitar and lyrics. Kwon Jin-ah's vocals enhance the immersion of the song, conveying a simple and warm emotion with her unique timbre. The song contains content that compares a loved one to the 'universe'. The producer team AIMING handled the production of the track, enhancing its completeness.

Lim Yoon-sung's sung piece 'Don't Step on my Heart' is an appealing rock ballad with a vintage band sound. The lyrics, composition, and production of this song involved composer Kim Gi-rim and SNNNY. Lim Yoon-sung, who is a vocal member of the runner-up team Cinema from JTBC's 'Super Band 2', harmonizes his rough and delicate voice well with the intense band sound.

Kwon Jin-ah and Lim Yoon-sung each embody different styles of songs, enriching the narrative of the drama. They are expected to maximize the emotional lines and storyline of the characters in the drama. 'Waiting for the Longitude' is a romance drama that deals with the reunion of Lee Kyung-do (played by Park Seo-joon) and Seo Ji-woo (played by Won Jin-ah) with the reporter who published the affair scandal and the wife of the scandal's protagonist. This drama airs every Saturday at 10:40 PM and Sunday at 10:30 PM.

The fourth OST of 'Waiting for the Longitude', featuring Kwon Jin-ah and Lim Yoon-sung, will be available on various online music platforms starting from January 4 at 6 PM. This OST is expected to enrich the emotional lines of the drama even further.