Later on, member Seohyun participated in writing the Korean lyrics for the album's title song, "Dear Santa".

[6] As an effort to support music education for children in Asia, the group contributed a part of the album's sales profits to a charity called "SMile for U", a campaign held between SM Entertainment and UNICEF.

[7] The title track "Dear Santa" was described to have mixed genres, including ballad and R&B melodies as well as a combination of upbeat and swing jazz sounds.

[5][8] Lyrically, it talks about a woman making wishes to Santa Claus, hoping to work things out with her boyfriend to spend Christmas time together.

[9][10] "Winter Story" was described to have a guitar-led sound that brings out Girls' Generation-TTS's "soulful" vocals.