OBE-awarded Welsh jazz/ classical musician and composer - former member of the 70s jazz-rock group Nucleus and prog-rock band Soft Machine.
As a composer, Karl's 'Ademius' project has been performed all over the world and has topped the classical music charts.
He released his debut album, "Adiemus: Songs of Sanctuary" in 1995, followed by: "Adiemus II: Cantata Mundi" (1997), "Adiemus III: Dances of Time" (1998), "Adiemus Live" (2001), "Adiemus IV: The Eternal Knot" (2001), "Adiemus V: Vocalise" (2003), "Adiemus Colores" (2013), plus 2017's: "Symphonic Adiemus".