@syag
That’s very fair and you make a good point. I chose a extreme case to make my point and i wouldn’t necessarily think that Greenbaum’s song is actually Jewish, just that you can make the argument it is. I just wanted to point out that the definition of Jewish music is not so black and white.
Music has been intertwined with davening since at least the times of the Beis Hamikdash. I understand Jewish music to be anything that is meant to bring a person closer to Hashem by employing Jewish themes. The tunes don’t have to be Jewish. There are niggumin that are used in davening which originated as local songs. By putting the words of davening, Jews have elevated the music and made it Jewish music. I put much more weight in what the actual intent is behind the song than the vehicle that is used to construct the song.