Fanny Brice, that is.
There's a scene I love in the movie, Funny Girl.
Fanny Brice (a young woman trying to break into show business just after the turn of the twentieth century) auditions for the chorus line in a theater production and gets promptly fired.
A production assistant hears her singing "The Greatest Star" and says, "You're no chorus girl. You're a singer and a comic. What made you try out for the chorus?"
And Fanny says, "Because that's what you were looking for. If you were looking for jugglers, I'd have been a juggler."
It's not so different, breaking into publishing versus breaking into acting. And I think there's a valid take-home point in that scene for writers seeking representation or publication.
A few weeks ago, I posted regarding determining the genre of your book. Towards the end, I touched on books that could possibly fit into more than one category.
If your book could truly be marketed in more than one genre, it's perfectly reasonable to do just that.
In other words, widen your query net... if you've written a paranormal romance that also happens to be an urban fantasy, query agents who represent both sorts of projects (just be sure to adjust your pitch as necessary).
Of course, your project must genuinely reflect the elements of the category you're using to describe the book. It won't help anyone to stretch the truth. Your project must deliver on the promise of the pitch.
But if you can juggle*, and they're looking for jugglers, you may as well get to it.
*Incidentally, I can juggle. My high school double-booked the swimming pool one semester during my junior year and, since most of the other equipment and space was already spoken for, we were asked to choose between juggling or hacky-sack. Your tax dollars at work. =)