The fourth annual World Concertina Day, sponsored once again by the International Concertina Association, was on February 6, 2025, the anniversary of the birth of Sir Charles Wheatstone. ICA encourages local groups and individual players around the world to put on your own concertina-related events, as happened on the previous  World Concertina Days. The ICA itself put together another of their annual international video concerts and organized another participatory online event.

Video: Part 1 with Rachel Mahony, Vincent Powell, Juliet Woodin & Janet Thomas, Jutta Tigges, Steve Wilson, Takayuki Yagi, Niki Fliri & Nina Dietrich, Dave Ball, Doug Watt, and Rosewood.

Video: Part 2 with Millicent & Tristan White, Gaylen Haas, Tim Collins, Dick & Sabina Glasgow, Willie Botha, Matt Heumann, Luke Vincent, Rick Epping, Jim Besser, and Gary Coover