Erm...Def Leppard in their hey day were a bit before my time, so was Joe Elliot from Sheffield, and singing with an American accent, or from America, singing with an American accent?
I must intrude but if he was born in sheffield then regardless of where he lives now or in the future he will always be from sheffied therefore he is from sheffield
When Def Leppard made a big comeback in the 90's after the tragic loss of Steve Clark I always thought that they sounded a little like Bryan Adams, but then he's Canadian.