Crystal Fighters took their name from an unfinished opera one of the lead singer’s found in her grandparents’ attic in the Basque country.  Quoted from The Guardian:

Apparently, singer Laure was going through her late grandfather’s possessions somewhere deep in Basque country when she came across an unfinished opera he’d been writing called Crystal Fighters. “The faded manuscript and the prophetic prose contained within quickly became an obsession,” she said. Now her band are trying to bring some of the quality of his wild, dishevelled poetry to bear on London’s trendy indie-dance scene.

Pretty song, different sound, interesting name.  I like