Beethoven.
Bach.
Pink Floyd (for programming work).
Vivaldi (for even more serious programming work).
Vangelis.
Creedence Clearwater Revival.
Various Baroque/Pre-Baroque Composers.
Some Medieval/Renaissance stuff.
Some Jazz.
The Shamen.
The Chieftans.
Cafe Del Mar.
Horslips.
Some weird stuff that I forgot to label.
Mozart.
And when I am doing research on potential opposition - The Goldberg Variations. [1]
Regards...jmcc
[1] Anyone interested in movies should get the joke.