Ключевые слова: activity, audience, background, blurred, bright, celebration, communication, concert, conference, convention, crowd, details, discussion, education, engaging, entertainment, event, explanation, exposure, festival, focus, gathering, hall, interacting, interaction, learning, lecture, lighting, listening, live, meeting, motivation, occasion, organized, performance, podium, presentation, public, reception, seminar, sitting, speaker, spectators, spotlights, stage, studio, talking, theater, topic,