After the First World War, from 1919 to 1923, she registered at the[2] Hochschule für Musik, Theater und Medien Hannoversinging lessons.
Since 1927, she has been performing in England with the pseudonyme Greta Colere under the conductors Thomas Beecham, Adrian Boult and Malcolm Sargent.
[1] During the Nazi era, Köhler married the tenor Laurenz Hofer (28 April 1888 in Cologne – 29 November 1964) and moved with him to Berlin.
[1] Graduates of her classes included the singers Josef Metternich, Rudolf Schock and Gotthard Kronstein.
The German National Library lists (as of April 2012) six record titles that document Greta Hofer's singing,[4] including