Kathleen Callahan has 4 Coldplay concerts.

Coldplay is a British alternative rock and britpop band formed in London in 1997. They consist of vocalist and pianist Chris Martin, guitarist Jonny Buckland, bassist Guy Berryman, drummer Will Champion and creative director Phil Harvey. They met at University College London and began playing music together from 1996 to 1998, initially calling themselves Starfish. Coldplay's music incorporates elements of soft rock, pop rock, piano rock, and post-britpop.