Remember that song in your head that you cannot rid of?
I recently read Musicophilia by Oliver Sacks. I've only started recently reading on Neurology, & as a book, I perhaps rate "Phantoms in the brain" slightly higher than this one by Sacks only because I understood a lot more & a lot more was explained. However, the sheer variety of ways in which we appreciate music is quite unfathomable as are the number of minuscule ways in which this fine balance can be upset. And this is particularly why this book is closer to our lives while "Phantoms" - while still about the human brain - does not quite connect at the same level.
If you've ever wondered about music, like it or dislike it, but cannot ignore it, this is the book to read to find out a lot more about how & why it affects us.
I cannot listen to music while doing something else. It is good to know that this is 'NOT' a condition. :)