I'm talking with a restaurant owner who wants to add a piano bar. His vision includes a small sing-along component with songsheets for patrons to join in. If you google top piano bar songs you get selections like Brown Eye Girl, Imagine, American Pie, Beatles songs, NY-NY, Piano Man, and the like. However, this restaurateur would also like some Rat Pack period songs of the like of Sinatra, Dean Martin, ect.

What songs do you think I should add to the list to meet the owner's request?