"Sigma" can refer to;
These are photos from concerts where Sigma played, so they may be of other bands that played the concert as well.
Buzzcocks
Guilfest 2014 Jul 18 - 20, 2014 Guildford, England, United Kingdom Uploaded by Craig Hatfield
The Boomtown Rats
Sugarhill Gang ft Grandmaster Melle Mel
Norman Jay
Fun Lovin' Criminals
Mr B the Gentleman Rhymer
The Fureys
Main Stage - end of the night
The Urban Voodoo Machine
Jedward
Ms Dynamite
dancing to Norman Jay
Glastonbury Festival Jun 29, 2014 Shepton Mallet, England, United Kingdom Uploaded by Martin Scarborough
Heaven 17
Guilfest 2012 Jul 13 - 15, 2012 Guildford, England, United Kingdom Uploaded by Craig Hatfield
Tim Minchin
