Music is considered haram because it is believed that it is a distraction from your creator, it diverts your attention from Islam and it could brain wash you. But what if someone isn't influenced by music at all, but listens to it?

For example, someone could be a strong good Muslim and listen to music at the same time but not being influenced just listening to it for fun or when studying and cleaning, it doesn't divert his/her mind from Allah they're not influenced by the lyrics and they don't listen to it on a daily basis and become addicted, just listening to it every now and then without being influenced or affected.