There are multiple artists by the name of David Gray, including:
These are photos from concerts where David Gray played, so they may be of other bands that played the concert as well.
David Gray Aug 12, 2006 Edmonton, Alberta, Canada Uploaded by Halorez
Wireless Festival 2006 Jun 21 - 25, 2006 London, England, United Kingdom Uploaded by Maf Daniel
David Gray Jan 27, 2006 Zürich, Zürich, Switzerland Uploaded by Sefton Perry
