The album's concept, from the title "Pink Tape", the Art Film released prior to the album, the VHS-type packaging to the music, is supposed to constitute a romantic movie starring f(x).
"Rum Pum Pum Pum", the album's single, lyrically compares first love with a wisdom teeth. The girls indeed compare themselves to the pesky molars in another one of their typically bizarre metaphors, with lyrics like, "Attention boys! I'm a bit different / I pushed aside all the others and took my place," and, "I will pierce through your heart's wall and grow."
Amber has self-composed the track "Goodbye Summer", initially with English lyrics; South Korean composer Kim Young-Hoo wrote all-new Korean lyrics for the song.
In 2013, the album sold 81,825 copies in South Korea, making it the 28 biggest-selling album of the year in the country.
- "Rum Pum Pum Pum (첫 사랑니)" - 3:18
- "Shadow (미행 (그림자))" - 3:30
- "Pretty Girl" - 3:06
- "Kick" - 3:38
- "Signal (시그널)" - 3:21
- "Step" - 3:36
- "Goodbye Summer" (feat. D.O. of EXO) - 3:11 (by f(Amber+Luna+Krystal))
- "Airplane" - 3:34
- "Toy" - 3:12
- "No More (여우 같은 내 친구)" - 3:36
- "Snapshot" - 2:50
- "Ending Page" - 3:58
- The song "No Love" was initally composed by American singer Ariana Grande for her first album Yours Truly. The song did not make the final tracklist of her album, and executives from her label then sold the rights to the song to SM Entertainment. Korean singer Dana rewrote the lyrics in Korean for f(x).
- Amber recorded another version of the song "Goodbye Summer" for her debut mini-album Beautiful, under the name "I Just Wanna". This version is entirely in English and features the original lyrics Amber wrote for the song. It also features singer Eric Nam.