On National Public Radio today RadioLab featured a repeated story on auditory hallucinations including an interview with the late Leo Rangell, PhD.
The takeaway is that after surgery, the 94 year old professor and clinical psychologist heard musical hallucinations. They began with Hebrew cantorial chants, and continued on to popular music for about two decades. As a Psychologist, Dr, Rangell felt that his mond was communicating something to him subconsciously through the song selection. I tend to agree with him, since when I start humming a tune, I also try to examine why my mind has selected that song.
A book on his experiences is called MUSIC IN THE HEAD: LIVING AT THE BRAIN-MIND BORDER
MyJewishBooks.com 