Tommy Steel was Only Man on The Island. Depends on which Celina you're referring to...
...the Mexican Whistler: Ennio Morricone by any chance?
Warmer. You've got the only teeth I was thinking of. It's Steele with an 'e', by the way - show respect to the British Elvis!
Celina will be the harder one to crack. But, if you can sort out the Mexican Whistler (not Morricone), and find a link to Steele, you'll have a pointer.