Blondie
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Cover versions: Randy and the Rainbows meet Blondie

BBC Music has launched a poll to find the greatest cover version of all time. But many people do not know that some of the most famous songs in pop history were covers.

Blondie's 1978 breakthrough single Denis was a New Wave gender-swapping take on Randy and The Rainbows' doo-wop hit Denise, which made the US top 10 in 1963.