auditorium, large hall, seating area, stage, curtains, acoustic panels, wooden flooring, spotlights, balcony seats, grand piano, podium, microphone, red velvet seats, architectural details, high ceiling, chandeliers, ambient lighting, wide angle shot, public speaking event, elegant, spacious, indoor, modern design, sound system, audience, lecture, concert, theater performance, ornate decorations, carpeted aisles, exit signs, emergency lighting, ventilation system, soundproof walls.