OK Go is an American alternative rock band originally from Chicago, Illinois, now based in Los Angeles, California. The band is composed of Damian Kulash, Tim Nordwind, Dan Konopka and Andy Ross, who joined them in 2005, replacing Andy Duncan. They are known for their often elaborate and quirky music videos.
The original members formed as OK Go in 1998 and released two studio albums before Duncan's departure. The band's video for "Here It Goes Again" won a "Grammy Award for Best Music Video" in 2007.