On a more serious note...
Just to let you know, In China the transverse flute is called
di (various types:
di-zi ,
chang-di , etc.) and one variety, called
tie-di ("iron flute"), is indeed intended as a possible weapon should the necessity to defend oneself arise for the player. I personally own one of those (bought it in an armoury in Tianjin. One of the many flutes I bought in China, being a flute playing freak.
). Mine also has the advantage of a hidden blade that can be used by unscrewing a part of the flute
. The blade is nothing short of crappy and hardly deserves the name, but the sheer weight of the flute makes it a bludgeon not to be taken lightly. As for its sound, it's very similar to that of the western transverse flute although it has no key the fingers positions differ.
I don't know any form that use this weapon, though...