Cuffie and I played at a retirement home this evening. They enjoyed it very much, but we had a few requests that we couldn't fill, and it got me thinking about "must play" tunes that are so helpful when playing for the general public. Tunes that they already know or know of.
Battle Hymn of the Republic
We were requested "Darling Clementine" which I could not fufill, so I will add that to my list. "Wait for the Wagon" could also be on this list, tho it's less familiar. I'm sure there's more "must plays" out there that I can't think of.