Professor Blagovesta Karnobatlova Dobreva is one of the most brilliant personalities in the musical life of Bulgaria. Her meteoric appearances in her homeland and abroad as an opera singer, concert performer and prominent vocal pedagogue have always been marked by a deep professionalism. She graduated at the Musical Academy in the class of Professor Iliya Yosifov and specialized in Milan under the tutorship of the world-famous opera singer and vocal pedagogue Mercedes Leparde.

Her repertoire includes ore than 30 principal operatic soprano roles which include Violetta (La Traviata), Gilda (Rigoletto), Mimi' (La Boheme), Marguerite (Faust), Nedda (Pagliacci), Pamina (Die Zauber Flote), Donna Elvira (Don Giovanni) and Adina (L'Elisir d'Amore) amongst many others. In the song genre, Prof. Dobreva is also known for the profound interpretation. The songs of Mozart, SChubert, Brahms, Schumann, Tchaikovsky, Gkinka Dargomiszhsky and Rachmaninoff found and inspired interpreter. Dobreva has also sung with famous opera stars like Placido Domingo, Jean Rode, Zinaida Palli, Nikolai Ghiaurov and Ghena Dimitrova.

She has made numerous recordings at the Bulgarian National Broadcasting Company and has appeared in three operatic films at the National Television and features on ten gramophone recordings for Balkanton. During recent years these have been also available on CD. Together with her active performance activity, Prof. Dobreva has been Dean of the Vocal Faculty at the State Academy of Sofia. She has sat on various adjudicating boards of international vocal competitions like the Tchaikowsky International Competition (Moscow), the Robert Schumann Competition (Zwickau) and the Maria Callas Competiton (Athens). She is the first Bulgarian soprano and pedagogue who was voted into membership of the jury of the International Competition "Young Opera Singers" In Bulgaria, after being its laureate, second-prize and silver-medal winner.

In these last years, Prof. Dobreva has been conducting Masterclasses in voice technique to the Chorus Urbanus' choir members as well as to soloists. These Master Classes have led to the emergence of promising individual soloists from within the Choir as well as have contributed immensely in the quality leap the Choir has experienced in these last years. The Choir's contact with Prof. Dobreva remains as close as ever and she will be involved in the Choir's training and rehearsing for the forthcoming engagements.