don't know what you mean. you know, even though sinatra sounds like pop music to me. ok so maybe it's not modern day pop music, but for that era, yes, it was pop music. it's not always how it sounds. you ask anyone, "heard of frank sinatra?" they'll say yes. you ask someone if they've heard of thelonius monk, different answer.
it's like green day and usher, both considered pop. both sound different