Clocks was released by Coldplay on the 2002 album A Rush of Blood to the Head and as a single in 2003, becoming one of the band's most recognised songs. Built around a piano riff written by Chris Martin, it won Record of the Year at the 2004 Grammy Awards. The riff has since been widely sampled, covered and reused in film trailers, television and online edits, where its looping pattern signals reflection, urgency and the passage of time, keeping it familiar far beyond its original rock audience.