Arnold Schönberg founded the Society for Musical Private Performances in November 1918 “to give Arnold Schoenberg the opportunity personally to carry out his intention of providing artists and art lovers with a veritable and precise knowledge of Modern Music”, as Alban Berg described in a leaflet in 1919. Chamber music, solo pieces and songs saw performance, and to a great extent, properly arranged for the available means, original large-scale orchestral works of topical and artistic high-quality were also produced. In the autumn of 1921, Schönberg embarked on an arrangement of Mahler’s Das Lied von der Erde, which, however, he broke off in the middle of the first movement. The continuation was to be taken over by Webern, but this did not happen, evidently as a consequence of the end of the society. It was only in 1982/83 that the German composer, conductor and musicologist Rainer Riehn (b. 1941) was prepared to continue what had been begun.