I listen to music while I draw. A lot of Bill Evans and quieter, subtler jazz music like that, but also classical music. Among my favorite classical composers I put Maurice Ravel very near the top. Art requires nuance and Ravel is all nuance, subtle variations, nothing obvious or insistent or clichéd or overly sentimental. I've spent years removing these things from my art and listening to Ravel and others like him has helped. Here is a drawing I did from a photograph of Ravel.