Published by Bro. Rob Lahey, a transcription of a handwritten score by Rex Koury that was published in the Theatre Organ in 1976. 

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Biography of Rex Koury: https://www.lorenz.com/keyboard/browse-by-composer?itemId=Composer:235

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YouTube link: https://www.youtube.com/watch?v=i8_OGR_FWE4