Coldplay are an alternative rock band from London, England composed of Chris Martin on lead vocals and piano, guitarist Jonny Buckland, bassist Guy Berryman and drummer Will Champion. Having released three successful albums, Coldplay have also achieved great success with their singles, such as "Yellow", "Speed of Sound" and the Grammy-winning "Clocks".
Coldplay's early material was often compared to the likes of Jeff Buckley and Radiohead, while also drawing comparisons to U2 and Travis. Since the release of the band's debut album Parachutes (2000), Coldplay have also drawn influence from other sources, including Echo and the Bunnymen and George Harrison on A Rush of Blood to the Head (2002) and Johnny Cash and Kraftwerk for X&Y (2005), the band's latest release.
Coldplay are one of very few current British music acts to achieve major success in North America. Despite Coldplay's large worldwide popularity, the band have remained protective of how their music is used in the media, refusing its use for product endorsements. In the past, Coldplay turned down multi-million dollar contracts from Gatorade, Diet Coke, and The Gap, who wanted to use the songs "Yellow", "Trouble", and "Don't Panic" respectively. According to Martin, "We wouldn't be able to live with ourselves if we sold the songs' meanings like that."
Since 2002, Coldplay have been active supporters of various social and political causes. They have been visible advocates of Oxfam's Make Trade Fair campaign and Amnesty International. The group has also performed at various charity projects such as Band Aid 20, Live 8, and the Teenage Cancer Trust.