Markku Aro. He recorded "Heinäkuussa vuosi sitten" (In July last year) in 1977. It was an album track and unfortunately did not draw any attention. The Finnish lyrics were done by Juha Vainio and the arrangement by Veikko Samuli - so, quality stuff ... The original song "Caterina Ballerina" was on the B-side of Joe Dolan's minor 1977 hit (number 43 in UK charts) "I Need You". It was written by Roberto Danova - well, who else.
Here's the pair: