Nothing like a nice song to make science more "accessible". From a blog at Smithsonian.com, a song about the Cambrian explosion:
Nothing deep about the song. You aren't going to learn anything surprising. But the melody is good and the performance is nicely done. I love the slide guitar.
... And I love the touch where they throw in the Canadian national anthem with a bit of "Oh Canada"! This national anthem isn't completely extraneous. The most famous example of Cambrian fossils is in Canada with the Burgess Shale.