WieWaldi I wasn't going to vote as I probably won't take part in the recital, but since you asked I have voted for my choice using the suggestion box. 🙂
Here's a link to a version of The Long And Winding Road sung by George Michael (because I prefer his voice to Paul McCartney's):
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By the way, here in the UK we would refer to this as a "Golden Oldie"... we would not usually use the term Oldie on its own, unless referring to an old person, rather than an old hit song.