"Canadian musician" . . "Dirk Keetbaas, Jr."@en . "1995Z"^^ . "1921-06-20Z"^^ . . . "Dirk Keetbaas, Jr. (June 20, 1921 \u2013 July 27, 1995) was a Dutch-born flautist, composer, and record producer in Canada. He became known as a member of the Symphony Six, a group of six musicians under contract to the Toronto Symphony Orchestra who were denied entry to the United States for a concert tour under suspicion of leftist activities."@en . "1995-07-27Z"^^ . . "1921Z"^^ . . "Keetbaas, Dirk"@en .