Graf Mourzha began studying music at the age of three under the supervision of his father. In 1982, Graf Mourja entered the Tchaikovsky Central Music School in Moscow, the class of Prof. Irina Bochkova. Graf Mourja graduated from the Moscow Conservatory in 1997, and did his postgraduate studies under the supervision of Professor Bochkova in 1999. At the same time, he finished his postgraduate studies at the Royal Academy of Music in London with the Mateja Marincovich.

Since 1990 Mourja gives chamber music concerts, recitals and concerts with symphony orchestra in Russia and Europe in major concert halls: Large and Small Hall of Tchaikovsky Moscow Conservatory, Large and Small Halls of the St. Petersburg Conservatory, Teatre de la Ville, Arsenal (France), Concertgebouw (Holland), Palais des Beaux Arts (Belgium), Liszt Budapest academy (Hungary), etc. 

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During his studies Mourja became the laureate and winner of numerous international competitions, among them- Tchaikovsky 10th International Competition in Moscow (1994), Jacques Thibaud Competition in Paris (1996, France), Pablo Sarasate competition in Pamplona (1997. Spain) and others. In addition, in 1994 G. Mourja was awarded the prize of "Juventus" festival (Cambrai, France) by the Council of Europe. In 2004, G. Mourja was awarded the title "Honored Artist of Russia".  In June 2010, Graf Mourja won The Gold Medal - Grand Prix at the prestigious Violin Competition «Violin Masters» in Monte Carlo.