3 songs titled "Childhood's End"

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Pink Floyd - Childhood's End
A track from their 7th album, Obscured by Clouds, released in 1972
Iron Maiden - Childhood's End (2015 Remaster)
A track from their 9th album, Fear of the Dark, released in 1992
N.EX.T - The Door of the World (Childhood's End)
The 1st track from their 3rd album, The Return Of N.EX.T Pt. 2 - The World, released in 1995