October Equus Is An Avantgarde / Progressive Rock Band From Spain. They Have Released Six Studio Albums Hydra 2004 October Equus 2006 Charybdis 2008 Saturnal 2011 Permafrost 2013 And Isla Purgatorio 2013 . The Main Composers Are Ángel Ontalva Guitar And Víctor Rodríguez Keyboards .