There are multiple artists that perform under the name Adrian Cox 1. Internationally acclaimed jazz clarinetist from the London, UK. 2. Recording name for Askild Hagen form Norway . 1. Adrian Cox at age 40 is certainly performing at the top of his game. He is one of the leading exponents of the New Orleans clarinet and has a huge wealth of knowledge of the music & the players of the era. His unrivaled feel and virtuosity for the music he plays have led to concerts with the biggest names in jazz including 2 concerts with Wynton Marsalis