Musis is very powerful, it opens up all gates, different musicical notes have a powerful effect on a persons mood more then anything (e.g. music was used for prophecy).
Listening to non Jewish music is often ‘love songs’ (western music)that engender immoral thoughts, or ‘funeral dirge’ music (eastern music) engender murderous thoughts. Only Jewish music that is between the ‘western’ and ‘eastern’ cultures, that is in the ‘middle’ does not create bad feelings in a person, and consequently bad actions.