Pamela Weston ( born London , 17 October 1921 ; died 9 September 2009 , ZÃ 1\/4 rich , Switzerland ) was a British clarinettist , teacher and writer . Pamela Theodora Weston ( born 17 October 1921 , London â '' died 9 September 2009 , Zurich , Switzerland ) was a British clarinetist , teacher and writer .