Absolutely. Music is a language all its own and connects our brain in ways that we don't fully understand. My step-father's father has severe dementia and is non-verbal and grumpy most of the time. The other night I pulled out my guitar and sang some old country songs. The moment I started singing, he threw his hands in the air, contorted his face and then started smiling and making eye contact with me and other people in the room. For a few minutes, it's like he came back.