I believe Bert recorded his version in Jul 1960 but writer Jerry Lordan was not happy with it so it was put on hold, The Shadows were offered it and recored their version in Sept 1960 - I personally prefer the Shadows version , I think Bert added to many trills and what we used to call 'twiddley bits ' that make it to fussy to my ears. Bert did record a slower version more in the Shadows later.
This is a re-recording from Bert, if you find the original from Bert it's quite different & rather slow (not to my taste) However this re-recording I like ! Bit different,
I know this may sound sacrilegious, but the first version I ever heard here in Canada was by Jorgen Ingman, and since then I have heard most all of the others... and with all due respect Jorgen's version is still my absolute favourite. Since music is subjective, to each his own.
I have just read today that Bert has been taken from us. There must be much joy in heaven listening to his work. Thank you Bert for the talent God gave you, and that you chose to share with me.