There are at least six artists named Ahab;
These are photos from concerts where Ahab played, so they may be of other bands that played the concert as well.
Wacken Open Air Aug 3 - 5, 2017 Wacken, Schleswig-Holstein, Germany Uploaded by Denzho
Ahab / Mammoth Storm / High Fighter Oct 29, 2015 Frankfurt am Main, Hesse, Germany Uploaded by Murmlermicha
Cropredy Festival Aug 13 - 15, 2015 Cropredy, England, United Kingdom Uploaded by Mr.Bassman
SWR Barroselas Metalfest XVIII 2015 Apr 29 - May 2, 2015 Barroselas, Viana do Castelo, Portugal Uploaded by La666
Ahab / Officium Triste / Witchsorrow / The Drowning / Faal / Eye of Solitude Nov 17, 2012 Islington, England, United Kingdom Uploaded by Gore Crazy
Bestival 2012 Sep 6 - 9, 2012 Downend, Isle of Wight, UK Uploaded by A Badger Faced Man
Billy Bragg
Cambridge Folk Festival Jul 26 - 29, 2012 Cambridge, England, United Kingdom Uploaded by Craig Hatfield
Joan Armatrading
Clannad
Roy Harper
Guilfest 2012 Jul 13 - 15, 2012 Guildford, England, United Kingdom Uploaded by Craig Hatfield
Nouvelle Vague
Björn Again
Heaven 17