I know what you're thinking: Oh, geez, Nirvana and Lady Gaga. Yet another mashup with "Smells Like Teen Spirit" in it. Yet another mashup with "Poker Face" in it. Peanut butter. Strawberries. How original. The weird thing, though, is that this mashup actually sounds pretty okay! And not just if you ignore the discordances and tilt your ears eighteen degrees to the side (as is the case for so many other unlikely mashups).
Thanks to Big Fishy for the heads up.