There are many of us around the planet dedicated to music and song for environmental and broader science education. Here are some links to some of them…
(Again, send us in your ideas of people/places/sites to add!)

Children’s Music Network Environmental Songs for Children
Includes lyrics, music clips, and sometimes sheet music for dozens of songs by members.

Sing About Science
Lots of resources at this site including a massive database of science-related songs, and a page of scientific references on using music for learning. 

Harold Wood’s Planet Patriot Earth Songs List

Nancy Schimmel’s List

Musicians United to Save the Environment (MUSE)