Note: I do not, in any way, own the songs below. Thought it would be fun if it had an OST, like in dramas. ;] Don’t ask me how they fit, since... I don’t know either. LOL.

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╔OST;╗
Start of a New Day – Good Person; SuJu [Cover]
In the Gift Shop – Sweet Dream; Jang Nara
Buying? – Promise; Lee Hongki
Feelin’ Something! – Love Love Love; Epik High
Transformation – Nobody; Wondergirls
Awkward Moments – Crayons Can Melt On Us for All I Care; Relient K [LOL.]
Kikwang’s Story – Kiss the Rain; Yiruma
Donghae’s Story – Umbrella; Epik High ft. Younha
Karam’s Story – Heaven; Big Bang
Taemin’s Story – Coagulation; SuJu KRY
Taecyeon’s Story – Telepathy; Younha
Kyuhyun’s Story – Everybody Else; Care Bears on Fire
Jaebeom’s Story – My All is in You; SuJu [IDKK D: I can imagine the beginning fitting in with his story.]
Ryeowook’s Story – Heard Em All; Amerie ft. 4Minute
Youngsaeng’s Story – Caramelldansen Speedycake Remix; Caramell (?)
Lesson: Heartbreak/Loneliness/Missing You - The One I Love; SuJu KRY
Lesson: Friendship - Shining Friends [English]; Hearts of Fencing [It's a cute song. ;3]
Lesson: Frustration [Love related] - Banana Heartbreak; Monkey Pink of Ape Escape 3 [Video game. Aha. DON'T YOU SEE I LOVE YOU, DON'T YOU SEE I LOVE YOU. I like how it starts off all sweet, then dissolves into maniacal lady voice.]
Cue End Credits! – Loveable; Kim Jong Kook

*More shall be added later on. When I gather some brain cells back.