There are two artists called I.O.S. One is a Detroit native also known under other aliases like Erik Travis, The Other Side of Space and Sound Of Mind. I.O.S. stands for Industry Of Sound. The other I.O.S. is a Dutch band which mostly makes music called Nederpop, meaning it's pop with Dutch lyrics, as described by the leadsinger: "Nederpop with a sharp edge". The band was founded in Groningen in the province with the same name in the nothern region of the Netherlands. Read more on Last.fm