There is more than one band/artist with this name:
1. Era (Enminential Rythmn of the Ancestors) (styled as eRa) is a New Age music project by French composer Eric Lévi. The band has sold more than 12 million albums. They use lyrics (by Guy Protheroe) which although similar to Greek or Latin are in fact deliberately devoid of any exact meaning.
Era mixes Gregorian chants and occasionally world music with contemporary electronic arrangements. It is reminiscent of New Age music projects such as Enigma, Gregorian, and Deep Forest.