"4 in the Morning" is a song by American singer and songwriter Gwen Stefani from her second studio album The Sweet Escape (2006). It was written by Stefani and co-written and produced by Tony Kanal, with additional production by Mark "Spike" Stent. Interscope Records serviced the song to US mainstream radio on May 8, 2007, as the album's third single; elsewhere it was released in June 2007. Described as one of her favorite songs on the album, Stefani began writing the song while pregnant and finished with Kanal, having Roberta Flack and Billy Idol hits as influences to build the track.