So there's this Canadian band I listen to called rush, and they are awesome let me tell you. Though this band isn't steampunk themed directly they do have a single song that is awesomely steampunk, called caravan. They are featuring this song in their tour they are on right now called Time Machine, which is also steampunk themed this year, and it is awesome. So if you are looking for a song that just may get you in the steampunky mood, Caravan is right where it's at!