Rooftop alphorns power virus-safe concert in Germany

A musician with an alphorn walk on the rooftop of an residence building during the sound check for the 'Himmel ueber Prohils', Sky over Prohlis, concert event in Dresden, Germany, Saturday, Sept. 12, 2020. About 33 musicians of the Dresden Sinfoniker perform a concert on the rooftops of the Dresden neighbourhood Prohlis.