Could be mercury tube (if your daughter selling the house or someone want to buy it could place mercury tube which when heated gives constant vibration) or termites if she lives in the wooden house.
Oh c'mon. Every music track is created to tap in persons emotions and make it vulnerable to the lyrics. Casual people doesn't distinct lyrics from music, thus they are chanting all the dumb texts without realization that they just program themselves.
If you still wonder why or how some woman or a man can't accept some facts, just ask them what kind of music they are listening. Personally I got my answers from there.