“5 STAR” is a feel-good type of love song, a song that you can listen to while driving with someone you love, as CL described on the MV’s behind the scenes video. She explains that she “wanted to further express the feeling of the first encounter in a relationship and illustrate that feeling through the music video”.

The song was released at first alongside HWA on October 29, 2020, but on November 6 the song was revamped and it was released as a standalone single, with a new artwork, and a MV.

One month later, on November 30, a “+5 STAR Rap Session” version of the song was released on CL’s Youtube channel, in which she replaced the first verse and pre-chorus with a newly written rap verse.