Diego Valentin, an engineer who owns the place(Ginger Restaurant), explained that the idea to build this lower ceiling (there is an actual ceiling above it) came before opening the restaurant last year. They built a metal net that could hold the bottles, and began filling it when they started pilling up in the restaurant. According to Valentin, the problem with sound in the salon was the bouncing of the sound waves, and the curved shape of the bottles helps 'break' them. As there is more space above the net, the sound continues its way up, improving the quality of acoustics in the salon, which is now used for events.