Rick Beato is a well-known, former, sound engineer and producer in the Pop/Rock music industry. He regularly posts interesting videos on the full range of musical genres. Here he highlights Martha Argerich (now 83 and still playing, I think), probably the greatest elderly super-virtuoso of all time. I recently posted this example from when she was just 77: Music sharing thread. Links only. No chit chat - #931 by Conrad_Melville
I find elderly virtuosity inspiring, for obvious reasons.