Lyric discussion by evilfish42 

Some nice theories, but the song does not have any meaning whatsoever (According to the Pink Floyd members themselves). The song's main motive started as a "theme to a non-existent western" written as no more than a joke. Add in some jam sessions, choir parts, and orchestration by Ron Geesin and you have the song. The title was actually taken from a random newspaper article (about a mother with an atomic pacemaker) because it sounded good.

Pink Floyd also said Dark Side was their worst album, they're weird about their music.

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