OK Go is an American rock band originally from Chicago, Illinois, now based in Los Angeles, California. The band is composed of Damian Kulash (lead vocals, guitar), Tim Nordwind (bass guitar and vocals), Dan Konopka (drums and percussion), and Andy Ross (guitar, keyboards and vocals), who joined them in 2005, replacing Andy Duncan. The band is known for its often quirky and elaborate one-take music videos.
This video link is amazing.
If you click on it and bear in mind IT IS NOT CGI. It is 100% real. No fakery - No Computer Graphics, it is all real people with umbrellas and there must be hundreds involved. BRILLIANT and on YouTube it has received over 46 million hits.