Boiko Zvetanov

Boyko Tzvetanov is a Bulgarian operatic tenor. He was taken on as a soloist with the Sofia National Opera from 1982 to 1990. In 1991, he became a member of the ensemble of the Zurich Opera House until his retirement in 2016. From Wikipedia (https://en.wikipedia.org/wiki/Boiko_Z...) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/b...)