"4 in the Morning" is a song by American singer 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 contemporary hit 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, drawing inspiration from Roberta Flack and Billy Idol records.