1985: Rock in Rio, a 10-day rock festival, kicks off in Rio de Janeiro. Before it’s over, it will attract 1.5 million music fans, making it the largest concert crowd ever. Headliners includes Queen, Rod Stewart, AC/DC and Yes (who all preform on multiple days. The event was so successful it’s been held 8 other times in Brazil as well as occurring in Lisbon (also 8 times), Madrid (3 times) & Las Vegas (once), all under the name “Rock in Rio.”