Listen to Echoi: IV. Echoi IV online. Echoi: IV. Echoi IV is an English language song and is sung by Jean Kopperud, Christopher Finckel, Stephen Gosling and Daniel Druckman. Echoi: IV. Echoi IV, from the album Lukas Foss: Pieces of Genius, was released in the year 2016. The duration of the song is 12:09. Download English songs online from JioSaavn.