"Cool" is a song by American singer Gwen Stefani from her debut solo studio album "Love. Angel. Music. Baby." (2004). Written by Stefani and Dallas Austin, the song was released as the fourth single from "L.A.M.B." on July 5, 2005, by Interscope Records. It was written by Austin basing the song on No Doubt's 2000 single "Simple Kind of Life", but he did not finish it. He then asked for help from Stefani and they finished the song in 15 minutes. The song's musical style and production were inspired by synth-pop and new wave arrangements from the 1980s, and its lyrics chronicle a relationship in which two lovers have separated, but remain "cool" with each other as good friends.