| # | Title | Artist | Rating | Length |
|---|
| 1 | 첫 사랑니 (Rum Pum Pum Pum)- assistant recording engineer:
- 이민규
- recording engineer:
- 정은경, 구종필, 이민규, 이면숙 and 남궁진
- producer:
- 이수만
- mixer:
- 남궁진
- background vocals:
- f(x) and Anne Judith Wik
- arranger:
- Ylva Dimberg, 정동윤, Erik Lewander, Iggy Strange-Dahl and Anne Judith Wik
- recorded at:
- In Grid Studio in Seoul, South Korea, SM Big Shot Studio in South Korea, SM Yellow Tail Studio in South Korea and T Studio in Seoul, South Korea
- mixed at:
- SM Concert Hall Studio in South Korea
- recording of:
- 첫 사랑니 (Rum Pum Pum Pum)
- lyricist:
- 전간디
- version of:
- Cookie Jar
| f(x) | | 3:17 |
| 2 | 미행 (그림자; Shadow) | f(x) | | 3:30 |
| 3 | Pretty Girl | f(x) | | 3:06 |
| 4 | Kick | f(x) | | 3:38 |
| 5 | 시그널 (Signal) | f(x) | | 3:20 |
| 6 | Step | f(x) | | 3:35 |
| 7 | Goodbye Summer | f(x) feat. D.O. | | 3:10 |
| 8 | Airplane | f(x) | | 3:34 |
| 9 | Toy | f(x) | | 3:11 |
| 10 | 여우 같은 내 친구 (No More) | f(x) | | 3:36 |
| 11 | Snapshot | f(x) | | 2:50 |
| 12 | Ending Page | f(x) | | 3:57 |
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