Many years ago we learned the Beatles' "Birthday" and it never really went over. People preferred the standard "Happy Birthday" song which through the years we've done as a jazz swing, reggae, rock, country and whatever style.
I wondered why the Beatles' version was never appreciated. Then one day it hit me, it's the line "Well, it's my birthday too yeah".
A person having a birthday celebration considers it a special day. They don't mind sharing the day with others who were actually born on that date, but not with members of the band and anyone/everyone in the audience who sings along.
Now I just strum a Bb7 on the guitar for pitch, Mrs. Notes leads off and the audience sings along.
Then, when the song is over, we do a little shtick for some grins, and make people smile.
Notes ♫