Italian restaurants (in the United States) and standards/crooner music

I’ve noticed that a lot of Italian restaurants will have 1950s-era standards or crooners as background music. Sure, Frank Sinatra is a famous crooner, but I don’t think it’s a style that has a disproportionately large number of Italian-American performers.

I’m curious how crooners became associated so firmly with contemporary Italian-American culture. Is the association there just because of one performer (Frank Sinatra), or is there more behind it? Could it be a remote association with 1950s/1960s Las Vegas? (Crooners -> old-school Vegas casinos -> Mafia -> Italians?) What kind of music is played at Italian restaurants outside of the US?

Well, Sinatra isn’t the only famous crooner; there’s also Dean Martin, Perry Como, Jerry Vale, Louie Prima, Al Martino, Tony Bennett, Vic Damone, Bobby Darin, etc. All Italian-Americans. Sure, not all crooners were Italian-Americans, but I think a preponderance of them were…TRM (proud Italian-American who CANNOT sing)

Dean Martin? Tony Bennett? Louis Prima, Vic Damone, Al Martino?

Not to mention Dean Martin? Tony Bennett? Louis Prima, Vic Damone, Al Martino?

It goes back to long before there was a Las Vegas, back to Naples in the old country. That’s where a major strain of what we call crooning comes from… men serenading their lovers, putting a lot of passion into it. “O sole mio” is one of the many Neapolitan classics and all of these Italian-American singers have been referred to at times as Neapolitan, after the style.