Tom Spencer was one of many people who recorded a cover version of the Gershon Kingsley tune 'Popcorn', but he is the only one - as far as I know at least - who can claim to have recorded the 'Deutsche Originalversion', in other words: the German original version. Which in itself seems like a lie, because the original version of 'Popcorn' was certainly not German.
As for Tom Spencer, he is an unknown artist who released only this single and a single called 'Ghostrider (Riders in the sky)', both in 1972.
My collection: 7" single no. 6281
Found: Discogs.com, received May 12, 2020
Cost: 2 pounds
Tracks: 'Popcorn' / 'Moog March'