what movie is this?

[thisguy]

im trying to find the title of a movie, not sure if this is the right place but ill ask anyways.
all i remember was that there was a guy that played his flute to a lady of the full moon, he didnt know who she was and she turns out to be a demon or something and that ther were awsom fight scenes.
if anybody knows what movie this is please let me know. :)

[Mr. HokeyPokey]

Have no clue, but my guess would be From duck till dawn.