How Songs Are Created on Instagram: "In September 1991, just weeks after the collapse of the Soviet Union, Moscow became the site of one of the most legendary concerts in rock history. Metallica, at the peak of their Black Album fame, took the stage at Tushino Airfield as part of the “Monsters of Rock” festival. What made it unforgettable wasn’t just the music—it was the sheer scale and the setting. Over 1.5 to 2 million people flooded the field, making it one of the largest concerts ever record