“Ogre Battle” is one of Queen’s many fantasy vignettes that appeared on their earlier albums, and is the first track on Side Black of Queen II. The song opens with the outro played in reverse, which eventually evolves into the song’s signature guitar riff. It’s one of the band’s heaviest tracks, and was a staple in the live shows for several years.
Queen has also stated that if they had released a second single from Queen II, it would’ve been either “Ogre Battle” or ‘The Fairy Feller’s Master Stroke", respectively.

Interestingly, a series of Japanese role-playing strategy video games share a name with the track— “Ogre Battle”, (or オウガバトル Ōga Batoru). Later installments of the same series include titles that reference other Queen songs, such as “Ogre Battle: The March Of The Black Queen", and “Ogre Battle: Let Us Cling Together".