The idea is that musicians from around the globe perform one of three pieces, in advance, or on the day, the afternoon of Remembrance Sunday, before 3:00pm and put it online.
I've not sight read a pieces of music in over forty years, so I may struggle! And I don't have my flute anymore either. Once upon a time I played in a school orchestra and a school brass band. Those weren't the days.
You can get all the details here: http://bit.ly/Play4Peace2019