I'm getting really worried. The other day I was visiting Mom and she told me she is getting annoyed with the loud music. I asked her what music and she said these guys come and they play this loud music "boom, boom, boom" and she asked me if I heard it. There was no music. When I thought about it I realized she must be having some sort of hallucination. She is almost totally deaf - there is no way she could hear music when she is inside her apartment. Is this part of what happens with Alzheimers?