When you work in an environment that can make you crazy, if you let it. I recommend a dose of classical music. Classical Music is not all Mozart, Bach and Bethoven you know. I am not into the heavy "Chamber Music"or the extended operatic arias but there are some selections I would highly suggest.
The 1812 Overture is excellent for dealing with cranky customers. There are some people you just can not make happy. I little cannon fire in the background makes it easier for me to listen to their whining.
Ravel's Bolero...Makes filing a damn site more fun..
For book keeping I like some Debussy. It is restful and helps me to concentrate.
I leave you with this video clip; this gives me goose bumps. British Airways liked the music so much they used it in an ad at one time.
Now, wasn't that beautiful?