The more I learn about Reverb, the more intrigued I am. Reverb is an organization that helps musicians green their concert tours and also offers outreach environmental education at concerts. If you’re going to see Jack Johnson, Dave Matthews Band, Phish or The Lillith Fair this summer, you’re bound to run into a Reverb table and some of the many volunteers who are working to make concerts more earth-friendly.

Reverb has started to focus on the food at concerts — specifically local food. The Green Music Group, a project of Reverb, is calling music fans to action. Specifically, Guster is challenging fans to eat one meal using local, sustainably raised food. Fans can submit photos of their meal until noon on June 18, 2010, to become eligible to win a Live Nation Ultimate Access Pass. The Green Music Group website has all the details.

Guster’s Adam Gardner, one of Reverb’s founders, issues the challenge:

Robin Shreeves ( @rshreeves ) focuses on food from a family perspective from her home base in New Jersey.