There are multiple artists known as ESO: 1. ESO (formerly known as Esoterica, typecast by the band as esOterica) were an Alternative Rock band from London, United Kingdom. 2. E.SO (이소) is a South Korean singer currently under A.I.M (Enterarts). She is a former member of the girl group Berry Good under the name Seoyul (서율). ead more on Last.fm