US - Mezzo-Soprano Markella Hatziano presented by George M Martynuk Worldwide Public Relations and Artists Management
Opera star Markella Hatziano is represented in the U.S. by the worldwide public relations and artists management firm George M Martynuk Inc.
george martynuk, management, opera, markella, hatziano, singer, mezzo, soprano, united states, new york, boston, los angeles
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