MAMAMOO's Solar participated in an OST for KBS2's drama 'School 2021'.

Solar's original soundtrack "Winter Flower" expresses the emotions of one longing for love that first found them coincidentally. The track utilizes warm acoustic guitar sounds completed by Solar's soothing voice, raising anticipation for its release.

'School 2021' is a drama that depicts the heart-fluttering story of growth, dreams, and friendships. Solar's voice will likely add to the viewers' immersion into the developing plot and each character's emotions. 

Meanwhile, the 'School 2021' original soundtrack "Winter Flower" will be released through various music platforms on December 22 at 6PM KST.