The original title of the song is "XTC" or "Ecstasy" before the Gibbs realized that it sounded like a drug reference so they changed it to "E.S.P." Barry handles most lead vocal duties for this song while Robin sing a few lines and edges into falsetto for the choruses [REF].
The demo of "E.S.P." was released in 1990 on the box set Tales from the Brothers Gibb, Like "You Win Again" it has the same drum program as the demo, and the same main vocal tracks, and it was speeded up by the same amount (103.25%),