What it sounds like when we are writing
I've seen several articles that made mention of what authors listen to (if they listen to anything) while they work on book projects. Some listen to classical music (words interfere) others listen to music set in the period of their book and some go with thematic music. Me? It depends. But I do tend to develop a pattern of listening to one album obsessively while workin on a book because it can become background music for me (though it has words) and it sort of signals my brain that it's writing time. For the current novel that music has been by Copeland. "Eat, Sleep, Repeat" and "You Are My Sunshine" have been my writing music for lo these many months now.
You can check them out here. Your wiring mileage and enjoyment may vary.