Aha! The care home repertoire - yes, mainly different from what is sung in folk clubs. Here in Scotland, it would be unusual, for example, to hear songs such as Skye Boat Song, Loch Lomond (in its usual version), Mairi's Wedding, Donald, where's your trousers, sung in folk clubs, though very popular for care homes. But bearing in mind the current "vintage" of care home residents (some of them younger than us performing!), other stuff from the 50s-70s goes down well - Elvis Presley, Buddy Holly, Beach Boys, Lonnie Donegan, and yes, Beatles.
There is a good mix of songs sung in folk clubs and sessions - looking through the list of songs sung in a recent session (yes, we are asked to write down what we are singing, just for the record), at least half were traditional or "in the tradition", but one Beatles song did creep in! And there are a couple of clubs and several festivals that specialise in Traditional song, e.g. Fife Traditional Singing Weekend, Cullerlie.