Essential Hits on Instagram: "“Speed of Sound” is a single by British band Coldplay, released in 2005 as the lead single from their third studio album X&Y. The song was written by Chris Martin, Jonny Buckland, Guy Berryman, and Will Champion, with production by Coldplay and Danton Supple. The track is an alternative rock and pop-rock song, built around atmospheric synths, steady piano lines, and an expansive, uplifting sound. Lyrically, it reflects on curiosity, wonder, and the search for meanin