Gaia is a 2003 album by Spanish folk metal band Mägo de Oz. It is the first rock opera of a trilogy. The album tells of a woman, the reincarnation of Azzak (or Gaia), who after her execution, is relieved of her soul: the soul of Azzak. Gaia, now free of her mortal skin, uses an e-mail to converse with the man who ordered her execution and tells him the story of Azzak and her affair in Colonial times. Upon his finishing the e-mail, she appears before him and it is left as a cliffhanger for Gaia II: La Voz Dormida to finish.