[3] The song is one of several based on Ian Gillan's real life experiences: "She was a complete mystery to me.

[4] The song begins with the sound of an air conditioner being switched on, recorded by assistant engineer Mike Thorne.

Thorne suggested the sound of an air conditioning unit, and duly recorded it, to the band's delight.

At the time the members of Deep Purple claimed that the sound was produced by a "special" synthesizer.

[5] A promo clip was made for the song, consisting of the band miming to the studio recording in front of a dancing audience.