People listen and contemplate the Orchestra of the Suisse Romande (OSR) & Borealis of the aurora borealis in music in the frame and for the opening of the music festival in summer, in Geneva, Switzerland, Friday, July 05, 2019. Orchestre de la Suisse Romande (OSR) combines with Borealis, an installation by Dan Acher that recreates in the sky the colours and visual effects of an aurora borealis, for an extraordinary experience. (KEYSTONE/Martial Trezzini)