"Swiss singer" . . "Bertrand Bitz"@en . . . . "Bertrand Bitz is a Swiss singer and songwriter, born on March 2, 1978 in Nax (Valais)."@en . "2003Z"^^ . . "solo_singer" . "1978-02-03Z"^^ . "1978Z"^^ . "Bertrand Bitz"@en . . . . . "Bitz, Bertrand"@en .