There are several parts to your question, so I'm not exactly sure if I'm answering all of the various parts. But -- your question immediately made me think of dementia patients. If speaking about consciousness as something cognitive, research seems to suggest that music most definitely can lead to higher consciousness even if it is only a temporary reprieve. I've heard stories firsthand from caregivers who have let Alzheimer's patients and patients with other types of dementia listen to music. For some reason, music has a visible effect on those patients. it's like it wakes up something in their brains for lack of better words at the moment to describe what I am thinking. Perhaps these people are awakened to themselves or their own memories. At the very least, there is something powerful about music so that it can influence mood and emotion. Even if the real correlation between music and these patients is a mood enhancement, that's still something pretty powerful.