For every visitor who has been to Beijing, do you still remember the vibrant symphony of sounds resonating through its bustling city center? From the melodious whistling of local pigeon breeders to the energetic calls of kitchen knife vendors in Beijing's historic hutongs, these unique auditory experiences of this ancient city are regrettably fading away amid relentless social progress. The Sound Art Museum, which opened on Friday, has recorded these sounds so that people can still hear them. With the cooperation of artists from multiple areas, the museum showcases a myriad of sounds including those of antique musical instruments from China’s border areas. Photos: Li Hao/GT