Freddie Mercury made the ay-oh call a signature part of Queen's live shows, most famously during the band's 1985 Live Aid set at Wembley, where he traded the phrase back and forth with the huge crowd. The moment became shorthand for his showmanship and for the bond between performer and audience, and concert footage of it has been shared, remixed and quoted for decades. Creators still reach for the short call because it instantly signals a live, communal atmosphere without needing any lyrics or explanation.