Does anyone know if there's an instrumental version of Dance Through the Danger? Is there an album?
Digital and physical soundtracks (depending on your backer tier) were offered as backer rewards on the kickstarter, but nobody has those yet.
There's a physical soundtrack CD included in the physical versions of the game published by XSEED (XSEED is calling their physical release the "Risky Beats Edition" because it comes with the soundtrack), but the soundtrack in the XSEED release is supposed to be slightly different from the kickstarter soundtrack. Supposedly both soundtracks are going to have something unique and exclusive on them to make them worth owning, so it's possible that one or the other might have an instrumental version of Dance Through the Danger (or maybe both of them will, or neither).
If you're interested in soundtracks, Limited Run Games just recently sold physical CD versions of the soundtracks to the previous three Shantae games, but they were limited (obviously) and are sold out now.
If you would like to buy them in digital, check out Jake Kaufman's
Bandcamp page. You can listen to a bunch of his work for free, or even pay him for it if you're feeling so inclined.