Rythym, cadence, beat, volume and delivery of the Music is a force for Good and Evil.   But that is not the focus of this article since there is an element of subjectivity in it.   

However, song lyrics are words which have literal and suggestive meaning.   

We can judge a songs lytics as Good or Evil based on its consistency or conflict with the Truth of God`s Word.   

Whatever is repeated over and over again will eventually begin to sound true regardless of whether it is or not.   

This is the basis of Political Propaganda.   It is the basis of brainwashing.   It is a technique that Satan uses very effectively to Deceive.   

When catchy music is combined with a Good lyric hearers are affected positively.   

When catchy music is combined with an Evil lyric the hearers are affected negatively.   

The problem with songs is that we are drawn first and foremost to the song by the music.   

It is possible for us to not really pay attention to the lyric because the music is so catchy.   

But consciously or unconsciously we are affected by the lyrics.   And as said above, the repetition of words eventually adds a false sense of truth to them.   

We are affected one way or another by what we hear.   

Faith comes by hearing the W Ord of God.   

Likewise, Doubt , Fear , Worry comes from hearing.   

Not only that, Error is introduced by what we hear.   

Here is a partial list of lyrics that you may be familiar to you which are Evil because they are not true.