My band is called Luna's Ceiling, this is the first flyer I ever designed for one of our shows. (cept it had show details to the right, I decided to leave the details out) This is our band page on Facebook: [link]
<---Yes I know... shameless plug.
In any case the concept behind it is our band is mostly industrial dance music though the roots came from the founding members love of Harry Potter. The name is a Potter reference and most our songs still have slight hints and references here and there, though you wouldn't notice it unless you were looking for it or knew what you were listening to.
In any case we are what you would call a musical project that might exist within the Harry Potter universe but not exclusively about Harry Potter... this image was not intended to be about Harry Potter so much as just reflect the whimsy and dark fantasy I imagine in our music and within the world our music exists in.