The final soundtrack of MBC's music variety show "1Lights" was released at noon on the 20th through various online music platforms.

The "1Lights" Episode 10 soundtrack features four singers: Kim Ki-tae, Son Seung-yeon, Lee Ye-jun, and Huh Gak. In the final episode aired on the 19th, the last four remaining winners out of the ten champions from previous survival rounds competed for the championship trophy, with Son Seung-yeon ultimately winning.

The final soundtrack includes a large number of newly produced songs tailored specifically for the four participants, a first in the program's history. Son Seung-yeon's "Only Tonight" and "Mally Flower" were selected as double title tracks. Son Seung-yeon participated in writing the lyrics for "Only Tonight," while "Mally Flower" features orchestration sounds and vocals emphasizing emotional expression.

Kim Ki-tae contributed to the lyrics and composition of the new song "Lighthouse Lit Alone," and showcased dynamic energy in "Storm Rider." Lee Ye-jun expressed refreshing high notes and emotional expression through "I Will Bloom Again!" and "Those Days," respectively. Huh Gak delivered heartfelt vocals in "Taking You Out Every Day."

This soundtrack underwent post-production comparable to studio recordings, enhancing the density and spatial sense of the sound, blending live arrangements from the broadcast with band and string sessions.