The topic you touched on relative to whether certain kinds of music – the chords/notes, not the lyrics – have any kind of moral implications reminded me of an episode of This American Life a couple of years back (http://thisamericanlife.org/radio-archives/episode/110/Mapping – see the “Hearing” section, about 12 minutes in) in which part of the discussion related to how particular notes and combinations of notes evoke particular moods. They noted that the Church in the Middle Ages even assigned different meanings to certain note combinations. The augmented 4th, a musical interval, for example, was known as the “diabolus in musica,” “the devil in the music.”