'Osiris' comes from the song cycle, 'Sun God Ra!', which follows the journey Ra takes in his boat as he crosses the heavens looking after his loyal subjects by day, and doing battle with the snake headed creature Apep at night. The engagement takes place in the Underworld where Osiris presides caring for those souls who have crossed over. Ra must win the battle to ensure battle a calm day with the next sunrise. Should he lose the following day will be blighted by storm and tempest. In this song Ra's crew seek help from the God with nocturnal responsibilities.