Messing around on the keyboard, I played B-Cmaj7-Bm/D, and I was like, damn, isn't that a post-Ok Computer Radiohead song? I went through a lot of the sample tracks on Amazon before finding out it was indeed Pyramid Song on their album Amnesiac, except I was half an octave off.
In my-mother-is-a-pittsburgh-tourist news, we went over to the nationality rooms in the Cathedral. I hadn't seen them all before. They're actually pretty neat.