> I've listened to "When Ginny Kissed Harry" ad nauseum at this
> point, and I can't hear any trace of "Hedwig's Theme" in it.
> I've listened to them back to back, I've even mashed them up. If the
> former is a variant of the latter, it's beyond any way that I can detect.
> (Corey, The same applies to "The Whomping Willow and the Snowball
> Fight" from the PoA soundtrack.)

It's not a direct statement of the theme - it's implied in both cases. Listen for the third, fourth, fifth, and sixth notes of Hedwig's Theme in particular.