|Minerva Among the Muses, by Hendrick van Balen the Elder|
My own personal muse comes to me most often at 120+ beats per minute, usually electronic dance music. The repetitive lyrics (if there are lyrics at all) and heavy, steady beat don't require much attention, and so they live in the back of my brain (or so I envision it), leaving the front of my brain free to work on whatever I'm doing.
Another muse lives in B-movies - horror movies, especially. The familiar tropes and plots work similarly to the dance music in that they don't require much attention. If something unexpected happens in the movie, well, that gives me a little break. :)
How about you? Where does your muse live?