Ключевые слова: background, backstage, beam, black, bright, building, cable, color, concert, construction, design, electric, electricity, empty, energy, entertainment, equipment, event, festival, frame, industry, installation, iron, lamp, light, lighting, metal, modern, music, organization, outdoor, outdoors, party, performance, podium, power, professional, projector, rock, scene, show, sound, spotlight, stage, structure, system, tent, theatrical, truss,