It's a style of music that models an underlying depravity, and thus would be a honest portrayal of our Reformed perspective on human nature; however, I would not advise Christians to listen to that kind of music (even if it has no lyrics), since it is not edifying to the soul and is not intended to glorify God, anyway. Although, some Christian rock bands would be a lot worse since their lyrics carry false teachings, especially with a strong semi-Pelagian bent.

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Jean-David Jutras
URCNA
Alberta