At a time when political activists and campaigns can host Zoom conferences with over a thousand attendees, and when astronauts can make outer space Skype calls, it’s easy to feel numbed to the sense of wonder that may come from contemplating our remarkable advances in communications technology. But June 25th is approaching, and if you’re a technology geek who also likes music and Beatles trivia, that date is going to have a special meaning for you. This year, it will be the 53rd anniversary of one of the most significant performances in the history of rock and roll, geopolitics, and global communications technology.

Conventional history of the Beatles’ “All You Need Is Love” emphasizes its role as anthem of the “flower power” movement, a term coined by Allen Ginsberg and associated with the hippie guerilla theater. But the production of the song was the setting for one of the biggest exponential leaps in mass communication technology in human history. The story intersects the history of the Beatles, satellite technology, and even sci-fi master Arthur C. Clarke.

The band premiered the song, which John Lennon had written with deliberately simple and accessible lyrics to appeal to a multi-lingual audience, on the Our World television program. After the development of geostationary satellites, the British Broadcasting Corporation’s visionary director Aubrey Singer was inspired to create Our World as a global program. He recruited folks all over the world to help him. The Beatles’ program brought 19 of those nations together on June 25 1967, a project involving 10,000 “technicians, producers, and interpreters” worldwide. The master control room for the Our World broadcast was at the BBC in London, and used the satellites Intelsat I (“Early Bird”), Intelsat 2-2 (“Lani Bird”), Intelsat 2–3 (“Canary Bird”), and ATS-1, a NASA satellite. The Intelsat blog points out that Early Bird could only transmit two channels at a time, reciprocally from the U.S. to Europe and vice versa.

Years earlier, before satellites even existed, Arthur C. Clarke had predicted that having at least three of them in geostationary orbit would facilitate global communication. Early Bird was the first such satellite placed in geosynchronous orbit, in April of 1965. Hughes Aircraft, the manufacturer of the satellite, had built the 76 pound satellite to test the very theory that Clarke had predicted—although it’s unclear whether anyone from Hughes was aware of Clarke’s prediction. In December of that year, Early Bird helped provide live television coverage of the splashdown of Gemini 6. It would later be used to aid the Apollo 11 flight in 1969 after the failure of another satellite, the Atlantic Intelsat. Early Bird provided direct contact, with only very short delays, between fax, TV, and phone links in North America and Europe.

Beyond the communications and space technology marvel that broadcast “All You Need Is Love” across the globe, the song was also an engineering marvel. The Beatles had recorded an initial track weeks earlier, then recorded an overdub of that track to create a master mixed track. It was that mixed track that provided the basis of the actual broadcasted recording, done in front of the entire world. The live overdub included a full orchestra, the Beatles themselves, and several guest singers including Eric Clapton, members of the Who and the Rolling Stones, Graham Nash, Marianne Faithfull, and more.

All of this seems almost quaint now, when producers can literally engineer entire symphonies and pop albums made by computers. But the Beatles’ embrace of global cosmopolitanism, the science fiction connection, and the band’s commitment to utilizing cutting-edge technology to deliver an iconic message of world peace, should continue to inspire us.