The harp is a lie.

[AsterBarnivere]

Personally, I wholly disregard the opinion of anyone who puts forth their speculation as a violently defended fact. Have you read back through the thread and seen the image I posted of the Bow in "expanded," and "collapsed" mode compared to the image of the harp that already exists in the game? Even the DAT Art Packet for the already existent bard harp (clearly visible in the Marauder's Guild) breaks most of the "rules" you just created.

I'm sorry your mind can't wrap itself around the idea that sometimes, in fantasy worlds, real world standards are not maintained. It doesn't have to make sense, it just has to be fun. It might very well be a bow-harp, and I think it probably is. Does that mean I'm claiming that there's no way that the bow could collapse into that shape, be held horizontally, and fire 5 crossbow bolts at a time? Not at all.
It could be anything - they do look like little arrows just as much as they do locks and swivels for strings. The image is very ambiguous with the little details.

Where were you naysayers when FFXI introduced airships? "BUT THOSE PROPELLERS COULD NEVER LIFT A SHIP OF THAT SIZE! F#@K THIS GAME, IT'S GOING IN A TERRIBLE DIRECTION! BOOOO!"

Now now moose, take a chill pill, eat some grass, relax, were all friends here, no need for such profane language, I suggest you edit it before a Mod gets whiff of your profanity.