I like to write to a soundtrack to get me in the setting of the book.  Links go to Amazon if you want to listen to clips there or buy the CDs.  (Disclosure: if you purchase through my link I get a little bit back!)

• Saint-Saens, Symphony #3 in C minor  (clips) (CD)
• Strauss waltzes, various (clips)(CD)
• Heart of the Gaels (CD)