I would just like to offer some suggestions. Rather than go on my taste, I would ask the client what are their favorite songs. It could be something they were romanced to, something that was special for them when they were in high school, college, etc.
I know this response is late. I was just going through the postings, but if you have the opportunity again, by all means play Eleanor Fell’s humorous “Harpy Birthday!” If you ham it up, the audience will be in stitches!