BERLIN, GERMANY – AUGUST 13: Colored flexi discs are seen on display at the "Bone Music – The X-Ray Audio Project" exhibition at Villa Heike on August 13, 2021 in Berlin, Germany. The exhibition, about the underground community of music lovers and bootleggers who defied censors in the Cold War-era Soviet Union through the manufacture and distribution of their own recordings of forbidden music such as "Rock Around the Clock," "Boogie-Woogie Bugle Boy" and "Lullaby of Birdland" by recording not only onto discarded x-rays but also other round items such as road signs and circular cake stands – affordable replacements when more conventional materials like shellac and vinyl were scarce and controlled – runs until September 5. (Photo by Adam Berry/Getty Images)
