Red Light is the third studio album by South Korean girl group f(x), released on July 7, 2014, by SM Entertainment and Genie Music.

[6] Naver describes the album's title track, "Red Light", as a "blast of urban rhythm bit, reversal in electro house genre".

[7] Jakob Dorof of Vice described the song as "a high-tech whiplash thriller with a chorus that hits like a fist and, by the second blow, has you begging for it.

"[8] Kenzie, wrote the lyrics and Maegan Cottone of Phrased Differently, Daniel Ullmann, Bryan Jarett, Allison Kaplan and Sherry St. Germain were credited with the song's music.

[10] The title track "Red Light" was played on Korean Broadcasting System's K-Pop Connection radio from July 8, 2014.

[23] Other TV stations, however, such as SBS's Inkigayo, MBC's Show Champion and Mnet's M Countdown, allowed broadcast of the song with its original lyrics.