Watch HDToday. 691,000 PEOPLE AT ROCK ON THE VOLGA! According to the organizers of the Russian festival Rock on the Volga, up to 691,000 people attended the concert of Rammstein. Festival-goers were less numerous in the early evening, but the crowd was more dense as the performance of Rammstein was approaching. If this is proven true, the performance of Rammstein at Rock on the Volga will be the largest Russian concert held during the 21th century. Rammstein did an amazing job!