HAVANA – Tens of thousands of jubilant Cubans and tourists swarmed the site of the Rolling Stones’ free concert in Havana Friday, calling it a historic moment for a country that once forced rock fans to listen to their favorite music behind closed doors.

Coming two days after Barack Obama finished the first trip to Cuba by a U.S. president in nearly 90 years, the evening concert highlighted the communist-run nation’s opening to the world and organizers expected at least a half million people to see the biggest act to play in Cuba since its 1959 revolution.

“After today I can die,” said night watchman Joaquin Ortiz. The 62-year-old said he’s been a huge rock fan since he was a teenager in the 1960s, when Cuba’s communist government frowned on U.S. and British bands and he had to hide his Beatles and Stones albums in covers borrowed from albums of appropriately revolutionary Cuban groups. “This is like my last wish, seeing the Rolling Stones.”

Small groups of people slept overnight outside the Ciudad Deportiva, or Sports City, where a massive stage had been set up for the British rock legends. Tens of thousands more people streamed toward the outdoor sports complex throughout the day.

At least half those waiting outside the concert gates to be the first to get in were foreigners, for whom seeing Cuba was as novel as seeing the Stones is for Cubans.

Ken Smith, a 59-year-old retired sailor, and Paul Herold, a 65-year-old retired plumber, sailed to Havana from Key West, Florida on Herold’s yacht. “This has been one of my life-long dreams, to come to Cuba on my sailboat,” Herold said.

Smith said the concert provided inspiration to come to Cuba after years of thinking about it and he didn’t regret it. “We’ve just been taken for a ride in a ’57 Pontiac. It doesn’t get any better than that.”

On arrival, lead singer Mick Jagger indirectly referenced the recent changes in Cuba. Obama re-established diplomatic relations with Cuba last year and called for the two countries to move toward full normalization in order to end the legacy of the Cold War and prompt Cuba to engage in more reforms of its single-party system and centrally controlled economy.

“Obviously something has happened in the last few years,” Jagger told reporters at Jose Marti International Airport. “So, time changes everything… we are very pleased to be here and I’m sure it’s going to be a great show.”

Cuban musicologist Joaquin Borges characterized the event as “very important,” saying it would be the biggest rock concert of its kind ever on the island. He predicted that it would encourage “other groups of that stature to come and perform.”