Sometimes you're just going along and think you have a good handle on the world in general, and maybe know a few details someone else doesn't know, and then--BAM--you hear something that makes you feel like you are clueless.
Keeping hands busy, I listened to RadioLab's presentation on in C, a piece in the key of C by one Terry Riley. I hadn't heard of in C, let alone Terry Riley, even though the people on the radio segment kept saying how famous it was, how it was a precursor to Phillip Glass (who I do know about) and Techno and how it influenced many other tangents of contemporary.
RadioLab played three cuts from the in C remix CD, and one of my favorites was by Zoe Keating, titled Zinc (that's Z for Zoe, and the inc came from in C). Lovely.
Here's the trailer for the CD--it's that kind of music you put on in the background while doing homework, or grading or keeping your hands busy and your mind active, but don't want interruption from lyrics. I'd recommend a listen, if you have some time.