site.btaBulgarian Polyphonic Quartet to Perform in Vienna over Easter
![Bulgarian Polyphonic Quartet to Perform in Vienna over Easter](/upload/181660/Svetoglas.jpg?l=1000)
![Bulgarian Polyphonic Quartet to Perform in Vienna over Easter](/upload/181660/Svetoglas.jpg?l=1000&original=)
The Bulgarian a cappella vocal quartet Svetoglas will perform in the Austrian capital on April 27. The Easter concert entitled The Mystery of Bulgarian Polyphony will take place in the Hofburg Chapel of the Imperial Palace, said the Haus
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