A short-sleeved camp shirt, khaki trousers and practical shoes — the sort of clothes one might wear on holiday, not in front of more than a billion television viewers. Yet on 13 July 1985, that unassuming ensemble became the only outfit in popular music history to perform at Live Aid in London, board a helicopter, fly aboard Concorde at over twice the speed of sound, land in New York and perform again in Philadelphia, all within a single day. The garments belonged to Phil Collins, and their improbable journey across the Atlantic remains a tangible relic of a moment when technology and music conspired to shrink the world.

The concert itself was a feat of logistical daring. Conceived by Bob Geldof and Midge Ure to raise funds for famine relief in Ethiopia, Live Aid unfolded simultaneously at Wembley Stadium in London and John F. Kennedy Stadium in Philadelphia. A satellite link beamed the sixteen-hour marathon to an estimated 1.5 billion people across more than 150 countries. The line-up read like a roll-call of rock aristocracy: Queen, U2, David Bowie, The Who, Led Zeppelin, Paul McCartney, Elton John, Mick Jagger. Collins, already a global star with Genesis and as a solo artist, played his own set at Wembley, joined Sting for a duet, then dashed to Heathrow. Waiting on the runway was Concorde, the supersonic airliner that embodied an era’s technological optimism. Somewhere over the ocean, he reportedly met Cher, who was unaware of the event and ended up backstage in Philadelphia. Collins even attempted a live audio broadcast from the aircraft — an ambition that, like the day itself, pushed against the limits of what seemed possible.

During the festival, Collins expressed a wish that 13 July would be remembered as World Rock Day. The suggestion never gained official international recognition, but it took root in an unexpected place. In Brazil, rock radio stations began promoting the date in the early 1990s, and over time it became a fixture of the national cultural calendar. While the rest of the world marks the anniversary only in passing, Brazilian audiences celebrate with special programming, curated playlists and homages to both international and local acts. The date’s Brazilian afterlife is a curious example of how a global event can be refracted through a single country’s media ecosystem, acquiring a meaning that the original organisers never anticipated.

Forty years on, the material traces of that day are surfacing again. The shirt and trousers Collins wore are now part of a forthcoming auction of items from his personal collection, with proceeds supporting The King’s Trust. They are more than memorabilia: they are evidence of a brief period when distance genuinely seemed to be disappearing, when a pop star could race the sun and perform on two continents in a single afternoon. The clothes, now silent and still, once crossed the Atlantic at Mach 2, carrying with them the sweat of a Wembley performance and the faint hum of a world briefly united by a cause.