God's gifts come with a responsibility to develop them in a way that glorifies God and serves other people. Discovering all the possible life-giving applications we might find for music will require hailing excellency on the one hand, and pointing out any shortcomings on the other. I Don't Listen to the words, but I'm still swayed by the music's attitude. Even without lyrics, music communicates volumes. Classical music is superior to popular music, according to many classical music lovers.
Every style is capable of expressing beauty, truth, longing, or joy.
We must respect Artistic freedom, as long as it comes along with a call to responsibly serve other people and glorify God. No subject is taboo if the artist genuinely tries to help us reach a more truthful understanding or fuller appreciation of it.