Soliloquium is a progressive death/doom metal band from Stockholm, Sweden, formed in 2011. It originally started as a side-project to the death metal band Desolator. Stefan Nordström is the vocalist, guitarist and main songwriter. Jonas Bergkvist on bass, also from Desolator, is the other constant Soliloquium member. The first demo "When Silence Grows Venomous" was released in 2012. It was quickly followed by three-song EP "The Concept of Escape" in 2013.