context: Performance of classical music repertoire requires a proficiency in sight-reading and ensemble playing, harmonic principles, strong ear training (to correct and adjust pitches by ear), knowledge of performance practice (e.g., Baroque ornamentation), and a familiarity with the style/musical idiom expected for a given composer or musical work (e.g., a Brahms symphony or a Mozart concerto).
question: శాస్త్రీయ సంగీతం ప్రదర్శించడానికి ఏ విధమైన సూత్రాల్లో నైపుణ్యం అవసరం?
answers: harmonic