Coldplay is a British alternative rock band.
In "Long John Peter", during Busy Business Lady Who's Life Is Missing Something But She Doesn't Realize It Because She's So Busy With Business, the music playing when the business lady and her colleague's eyes meet is the band's song "Clocks".
In "Undergrounded", the guys share secrets when trapped in a tunnel collapse. Joe Swanson admits to going to a Coldplay concert which Cleveland Brown also admits attending and then tries to lie about it. However, he recounts to himself of actually attending by accident when trying to see Kid'n Play.