The two concerts, which took place simultaneously at Wembley Stadium, London, and John F Kennedy Stadium in Philadelphia, brought together many of the leading artists of the day as well as classic acts.
It made £150m for victims of the famine in Ethiopia.
Today collectibles associated with many of the acts who performed that day are highly sought after by collectors, with autographs particularly in demand.
Following a rousing rendition of Rockin' All Over the World from 12-bar rockers Status Quo, music's great and good took to the Wembley Stadium stage for a series of brief performances.
Between 18:00 and 20:00, the crowd witnessed Queen, David Bowie, the Who, Elton John, Paul McCartney, and the entire Band Aid ensemble, finishing off with Do They Know It's Christmas?
Over in Pennsylvania, fans were treated to acts such as the Beach Boys, Madonna, Tom Petty and the Heartbreakers, members of the Rolling Stones, and Bob Dylan, whose signed set lists are always of interest to alternative investors due to their rarity.
There was also a collaboration between Eric Clapton and Phil Collins. Their signatures can both command interest on the private markets today thanks to their enduring popularity and respect as musicians.
A T-shirt signed by Madonna is currently for sale on the private markets. The item was worn by Madonna at the amfAR (the American Foundation for AIDS Research) Benefit in 1991.
The signed item is accompanied by a Live-Aid T-shirt, a photograph of Madonna and a letter of authenticity.
Live Aid brought the plight of Ethiopia to the public's consciousness and paved the way for numerous charitable music events to follow, most notably Live 8, which took place in the G8 countries in 2005.
And, as long as Live Aid and its artists' legacies continue, the value of these collectibles should continue to grow.
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