After all the scripting/thumbnailing is done, and all that's left is to draw the actual page, I don't actually listen much to music - I listen to podcasts.
Like, a metric ton of podcasts.
Podcast List of Doom
British History Podcast - exactly what it says on the tin - the history of Britain from the earliest archeological evidence of stone tools to the eve of WWII. Right now, host Jamie Jeffers is neck deep in the so-called Dark Ages, dealing with the invasion of the Vikings and the rise of Alfred the Great.
History of Rome - that rarest of beasts; a finished history podcast! Mike Duncan started with the very earliest historical evidence about the kings of Rome, went through the Republican era, the rise of the imperium and aaaaaall the way down to the fall of the Western Roman empire. After you're done with this, you will probably have a favourite Roman emperor (mine's Aurelian!)
History of Byzantium - Can't get enough of the Romans? Robin Pierson picks up where Mike Duncan left off, and chronicles the next 1000 years of history, focusing on the Eastern Roman empire and Constantinople. Strap in for some serious discussion of early Christian church-schisms!
Revolutions - Mike Duncan's new project! The revolutions of the world, in podcast form! Discussed so far - the English Civil War, the American Revolutionary War, the French Revolution and currently the Haitian revolution.
You Must Remember This - sick of ancient history, church conflict and war? How about a podcast all about early Hollywood? Well researched, beautifully produced and FULL of fascinating things about our favourite tinsel town.
Lore - Weird history, mystery and ghost tales. Haunted houses, ghost ships, zombies, the New England vampire panic, and what it was that made them tick.
Welcome to Night Vale - a little town where the wind is hot, the mysterious lights move overhead, and you must never, EVER take your dog to the dog park.
The Black Tapes Podcast - serialized horror fiction, framed as though it isn't fiction. Guaranteed to mess with your head, even if just a little bit, and make you very suspicious of VHS-tapes.
Friends at the Table - a table-top rpg podcast, currently divided in two seasons. In the first, they play Dungeon World in what they call a "post-fantasy" setting in which the great catastrophe has already happened, and humans, elves, halflings and orchs have started picking up the pieces and learning to live in the aftermath. In the second, they play a scifi game in MechNoir and The Sprawl, full of giant robots, spaceships, domed habitats on hostile planets and inter-planetary conflict. Warning: both seasons carry a high risk of making you cry like a baby.
.... those are the ones I listen to regularly. There are others, but these are the main ones.