Ключевые слова: 20s, african american, asian, black, boy, caucasian, choir, class, college, community choir, conductor, education, female, girl, gospel choir, group, high school, hispanic, horizontal, learning, lesson, male, multicultural, music, people, performance, performing arts, person, practicing, pupil, rehearsal, rehearsing, school, singing, student, studio, studying, teacher, teaching, teen, teenage, teenager, teenagers, training, tutor, twenties, university, usa,