"24 Hours a Day" is a 1976 song by heavy metal band Triumph from their debut album Triumph. The song was written by Rik Emmett and had existed as part of Triumph's stage act as far back as 1975. It has appeared on three studio albums, although it has never been re-recorded. Originally appearing on the self-titled debut, later re-appeared on the re-packaged Rock and Roll Machine released two years later. Then in 1995 when the self-titled debut was re-distributed as the album In the Beginning
Though the song is not a duet in the purest form it has two different vocalists. The opening verses, melodic section, is sung by Rik Emmett, until it becomes a full-bore rocker where the microphone is turned over to drummer Gil Moore. The song is also notable for being the only time throughout the band's career that Mike Levine sings any lead, this being the 'Everybody Party' section of the chorus.
This was the band's second ever single, originally only released in Canada, until an international deal was scored.