“It may seem like a no-brainer to offer a musical component to a book about a musician, but even a few years ago, in the pre-iTunes era, it would have been prohibitively expensive for a medium-sized publishing house to create such an enhancement. Now, as the book industry struggles in part because of the digital age, the accessibility of that same digital technology becomes an irresistible tool. And the music soundtrack – digitally or not – has become a value-added offering for publishers.”