The system of a famous russian theatre director, actor and pedagogue Konstantin Stanislavski was created for actors to draw believable emotions to their performances. It is a whole set of exercises to be practised daily in order to control better such uncontrollable aspects as emotions, inspiration, improvisation at the moment. Some principals seemed for me familiar with those we as musicians are trying to learn. In my research I wanted to see the connection between the theatre and the music worlds and to try to see whether these system is applicable for musicians and in which way.