I did a similar gig few years ago, and I did some of the songs mentioned, but I did play also the old standards like It had to be you, All of me, etc...songs that you may consider appropriate or that age group, and the result was a happy sing along on the room....that day, was family day, so, relatives of this people where there and to their amazement, they all sang those tunes, but had no idea who was next to them.....Music is incredible tool....
My 2 cents.
Manuel
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mdorantes