There are two artists that have used the moniker Ekko
The albums Centripetal and Ekkocentric are by a group called Ekko, a project by Adham Shaikh with collaborators Kenyon Field, E. Shankar & A. Larouche. They produced ethnic ambient/dub.
Originally an alias or solo project for Danish composer and multi instrumentalist, Frithjof Toksvig, born 1962. Frithjof Toksvig used to play in the Danish art-pop group The Poets (originally Poets Of The Signature, in the US and Canada known as The Sealand Poets). Read more on Last.fm