Edit: Walk Like A Man by Four Seasons thanks and credit to groucho for finding it!
Not sure if thats in the chorus or somewhere else in the song, i just sort of vividly recal all the oooos and wooos 😅
Makes me think of Spandau Ballet and also that quartet group Frank puts together in Its Always Sunny in Philadelphia a bit but I just mean the sound
The genre is called doo wop. Unfortunately there are hundreds of songs with that refrain because it defined the style.