..and if your a P-51 fan, you crave that sound......
this one is one of the better vids.
http://www.youtube.com/watch?v=lzaEmkgfK58
Back in 1980 my husband and I were in Tahiti, sitting on the hotel deck off our room when all of a sudden he said: “that sounds like a P-51 engine to me”.. couldn’t see it, but he could hear it... pretty soon what came into view to land at the airport ({we could see from our balcony) but a P-51.. beautiful... it had extra fuel tanks mounted and we surmised it must have been ferried in from South America or Australia... but there was no mistaking the engine.