Writing: Setting the right Mood and stick to it!

This is something I found out while working as a programmer, but it applies to writing as well. If you are listening to music while doing one of the aforementioned tasks, there will be a noticeable influence on your writing/coding style. DUH!, I hear you say? Right, but sometimes this fact can be used to your advantage.
Let's say you are supposed to work on something really wild and adventurous and you are actually feel a little more mellow than the work at hand allows – or the other way round for that matter. My cure are specially crafted playlists in Apple's iTunes (also to be found on my iPod, of course). That way I have a weapon against my current mood and, especially effective, against the background music in the different coffee-houses I'm writing in.
Too simple? You bet. Give it a try.
BTW: Regarding coding style, check your variables. Mine were called damn1, damn2, etc. for debugging when I was in a very bad mood, looks ridiculous when doing a code-review later, believe me.