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OJ 12/59, [1] Handwritten letter from Siegfried Fritz Müller to Schenker, October 31,
1922
Siegfried Fritz Müller suspends his lessons with Schenker on account of his
father's financial circumstances.
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OJ 12/59, [2] Handwritten letter from Siegfried Fritz Müller to Schenker, dated July 12,
1923
Siegfried Fritz Müller asks for a testimonial for a piano teaching
position.
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OJ 12/58, [1] Handwritten letter from Paul Müller to Schenker, dated July 19, 1923
Paul Müller asks Schenker to write a testimonial for his son, Siegfried Fritz,
and expresses satisfaction at the latter's progress.
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OJ 12/58, [2] Handwritten letter from Paul Müller to Schenker, dated July 20, 1923
Paul Müller thanks Schenker for a testimonial for his son, Siegfried
Fritz.
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OJ 12/59, [3] Handwritten letter from Siegfried Fritz Müller to Schenker, dated September 7,
1923
Siegfried Fritz Müller reports on a recital that he has given, inclosing the
program and early reviews. –- He has just done an audition for the position for which he has
applied. -- He has to do a short period of military service, after which he will continue
his studies with Schenker.
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OJ 12/59, [4] Handwritten letter from Siegfried Fritz Müller to Schenker, dated November 13,
1923
Siegfried Fritz Müller has a teaching job and reports how it is going. -- He
is studying Schenker's writings. -- He gives an unfavorable reaction to Walter Dahm's book
[Die Offenbarung der Musik: Eine Apotheose Friedrich Nietzsches]. -- He reports Carl
Bamberger's trip to Finland.
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OJ 12/59, [5] Handwritten letter from Siegfried Fritz Müller to Schenker, dated September 21,
1924
Siegfried Fritz Müller has met with resistence in rural Switzerland to
Schenker's ideas. -- He describes his daily working practices. -- He plans to return to
Schenker for lessons in Spring 1925 and lists the works in his prepared
programs.
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OC 52/639 Handwritten letter from Siegfried Fritz Müller to Schenker, dated February 13,
1925
Siegfried Fritz Müller reports his subscriptions to Tonwille and asks for
clarity regarding dealings with Drei Masken-Verlag.