“There is no specific issur of listening to “non-jewish music.” And I’m not sure why you think that particular tune has some issur attached to it. Or inappropriateness. “
It is inappropriate. It has nothing to do with who writes the song, it’s the song. And most of their songs today are blatantly expressing utter pritzus. Transforming a song that promotes such things is wrong. There doesn’t have to be an issur on it for it to be wrong. Write your own music.
It’s a sensitivity which it sounds like musicaldignity possesses (and you don’t). It’s just another form of assimilation.