There are multiple bands called The Answer:
These are photos from concerts where The Answer played, so they may be of other bands that played the concert as well.
In Flames, Sonisphere 2011
Sonisphere 2011 UK (COMPLETE list from the event timings calendar) Jul 8 - 10, 2011 Knebworth, England, United Kingdom Uploaded by Sable D Credit: © Sable Delaney
Sonisphere Festival 2011 Jul 8 - 10, 2011 Knebworth, England, United Kingdom Uploaded by Gwyn Williams
Sonisphere Festival 2011 Jul 8 - 10, 2011 Knebworth, England, United Kingdom Uploaded by Josh King
Hayseed Dixie, Sonisphere 2011
Slipknot, Sonisphere 2011
Biffy Clyro, Sonisphere 2011
Mojo Fury, Sonisphere 2011
Wheezer, Sonisphere 2011
Metallica, Sonisphere 2011
Bill Bailey, Sonisphere 2011
Sisters of Mercy, Sonisphere 2011
Panic Cell, Sonisphere 2011
Airborne, Sonisphere 2011
Bat Sabbath (Cancer Bats), Sonisphere 2011
The Mars Volta, Sonisphere 2011
Sum 41, Sonisphere 2011