The better the song, the better the musical flash mob. So man, you can’t do a whole lot better than “Seven Nation Army” by the White Stripes.
A group called CityRocks in Hungary put this together with 500 musicians of all ages. Have ya ever seen so many drum sets in one place?
CityRocks formed in 2017, and in 2018 gave their first performance with the largest rock band I’ve ever seen. Apparently, they’ve done about a dozen covers, and I hope they keep it up, because they’re spreading lots of joy.