Music brings out kochos hanefesh.
A malchuskik nigun like Kel Nekomos brings out romeuskikeh feelings. Songs of devekus bring to devekus.
What do you think jungle music does? It brings out the animal nature of a person!
Also, there are many frum people today who are familiar with the goyishe tunes being adapted to Jewish words. Unfortunately, when the music is played, the old words pop into the brain. (I say unfortunatey because, although Hashem surely chose the upbringing of each of us, we might wish we had the zchus to stop listening to that music earlier, or to purify our neshomos sufficiently that those memories would be eradicated.)
Examples:
Ayelet hashachar, star of the morning….morning has broken (Cat Stevens, I believe)
Anyone know which song has a big piece of “You’ve got a friend” from James Taylor?
Yidden – from Ghenghis Khan…
And – the worst (in my opinion) – I protested to a frum station that was playing “Halleluka” as part of their daily schedule. That tune was used by George Harrison (of the Beatles) to sing about an avodah zorah, and those who knew that song do NOT appreciate having those words played in their head!