It's A Sin by Pet Shop Boys
Well, I still have the 12" vinyl version of this stored away somewhere! There
was much controversy when this was released in June 1987. DJ Jonathan
King accused Pet Shop Boys of plagiarising the melody for It's a Sin from Cat Steven's 1971 hit, Wild World. He made the claims in The Sun newspaper, for which he wrote a regular column during the 1980s.
King also released his own cover version of Wild World as a single, using a similar musical arrangement to It's a Sin,
in an effort to demonstrate his claims. This single flopped, while Pet
Shop Boys sued King, eventually winning out-of-court damages, which they
donated to charity.
This powerful song was Pet Shop Boys second No.1 single, and was about Neil Tennant's difficult Catholic
upbringing and education. It spent three weeks at No.1 in the UK
singles chart during June 1987.