That first song will vary significantly with the audience composition. Learn to read the audience and you'll immediately know which song to do first, second, third, etc..., and of course the last is among the most important, providing a lasting impression.
Good Luck,
Gary
Absolutely, Gary. We end the show with the McGuire Sisters' 'Goodnight Sweetheart'. A couple of verses, then I drop the volume back as the missus says the goodbyes, thank-you's, see you next time, and such, then we're back in with the final verse and a proper ending.