You might remember the Mathematical Love Song by the Klein Four Group. From the same performance, here’s their imaginative arrangement of The 12 Days of Christmas. -via Educational CyberPlayground
I'm so happy to see this on Neatorama! The guy on the right was my vector calculus teacher, and even though I got a C in the class, it was a joy to see how excited he was every day to teach such an exhausting class. You can buy all of The Klein Four's songs on iTunes!
I've seen Straight No Chaser sing it in concert and it's on their CD. Don't know if they originated it or not but it's great and a longer version than the one posted ablove. http://www.youtube.com/watch?v=2Fe11OlMiz8
http://www.amazon.com/BOCA-Humor-Wasting-Parents-Money/dp/B00003G1RR
Although, I admit the I dont know if they got it from somewhere else, too.