I've had this song in my head for no very good reason the past few days, and I pass it on here - in a rendition by arch UK soprano/crossover sensation Lesley Garrett - so you will too.
Sadly, Maureen McGovern's startlingly funny version hasn't been Youtubed, although you can, if you like, catch a rather more elegant singing of it by the exquisite Dutch diva Elly Ameling (I adore how those ladies bring such a genial, "look Ma, I'm dancing!" air to their encore numbers).
Knowing you, though, you'll probably click right through to the (maddeningly unembedable) dance-spectacular featuring the improbable trio of Steve and Eydie and Gene Kelly. Nothing says Gershwin like a 1975 TV special, after all.