Coldplay is a solo rock performer.
Coldplay are a British rock band formed in 1996 by lead vocalist and keyboardist Chris Martin and lead guitarist Jonny Buckland at University College London ( UCL ) . Will Champion joined as drummer and backing vocalist , completing the lineup . The Blue Room is the second EP released by British rock band Coldplay , and their first release after signing with the Parlophone label in October 1999 . `` Yellow '' is a song by British rock band Coldplay .