"Earth Song" is the third single from Michael Jackson's album HIStory: Past, Present and Future, Book I. It is the fifth song on the second disc of the album. It is a ballad that incorporates elements of blues, gospel and opera. Jackson had a long-standing history of releasing socially conscious material such as "We Are the World", "Man in the Mirror" and "Heal the World". However, "Earth Song" was the first that overtly dealt with the environment and animal welfare.