Trude Mally , b. Gertrude Barbara Mally ( Neukettenhof , January 21 1928 - Vienna , June 4 2009 ) was an Austrian singer and yodeller . Mally was born into a musical family. During World War II she married a niece on the front with folk songs. After the war she was a member of the Alpenglangtrio and she went on tour with Hans Moser. Mally was also featured on the Austrian radio regularly. From 1951 she performed with the famous musical family Matauschek, where she also her first husband Fritz Matauschek met, with whom she was married until 1960. From 1964 she formed with her ​​new partner, Karl Nagl, the Alt-Wiener Duo . Mally was one of the last representatives of the typical Viennese yodeling , the "dudeln".