In 2003 Alan Simon created GAIA, a humanitarian concept album dealing with the preservation of the environment and for which many artists responded to the call: Midnight Oil, Justin Hayward of The Moody Blues, Zucchero, Jane Birkin, Cesaria Evora, Billy Preston and others. GAIA, was played before 60,000 spectators in Zurich in early 2004. The album entered the Top five in Australia. A special edition with bonus DVD was also released.