Kacey Musgraves releases new song “Oh, What A World 2.0” (Universal Music Group), with engineering by GPS client Ryan Hewitt. The release is?in celebration of the 50th anniversary of Earth Day.?Musgraves has created the Kacey Musgraves Earth Day Fund in partnership with the World Wildlife Fund. Donations will support the WWF?s efforts to conserve nature and reduce threats to endangered species. Listen to the song below: