"Sleepless Night" is a fast-paced, high-energy track from Dokken's 1987 album, Back for the Attack. Co-written by Lynch, Brown, and Pilson, it's one of the album's most aggressive and thrash-influenced songs, driven by a relentless, complex rhythm riff by George Lynch. The song is a showcase for the band's instrumental prowess, featuring a blistering, highly technical guitar solo and a powerful, almost frantic energy that makes it a favorite among hardcore Dokken fans.