Bobirshoh Gaybullayevich Nurullayev. TEACHING VOCAL PERFORMANCE TO NINTH-GRADE STUDENTS OF A SPECIALIZED ART SCHOOL: OPPORTUNITIES FOR EXPANDING VOCAL RANGE THROUGH THEORETICAL KNOWLEDGE. Scientific Journal [Internet]. 2026Nov.5 [cited 2026Nov.5];2(11):12-7. Available from: https://claritaslumen.org/index.php/ercah/article/view/204