Merciful Zeus! I had totally blanked about Xena having a musical episode. I might have to find Bitter Suite and give it a watch again.
The first thing I said when the credits finished on seeing Once More With Feeling with friends back when it originally aired, was "wow, some real shit went down in this episode." As if singing blunts the edge of the realizations. Willow tears up at the unimaginable horror of what she's done...and then 2 minutes later is singing again.
Great article, thanks for posting!