Schwitters himself claimed the
"Ursonate" (or Sonate in Urlauten) to be "his most comprehensive and
important poetic work" He developed the "Ursonate" over a period of
10 years (1922 - 1932), performing it by heart. Only in 1932 he published
.the complete print version in a typography by Jan Tschichold as issue
24 of his magazine "Merz".
In 1925 with Merz 13 Schwitters published a record (Merz-Grammophonplatte)
of the Scherzo of the Ursonate. In 1932 the Süddeutsche Rundfkunk published
a new recording of the Scherzo.
The following file of the complete "Ursonate" performed by Schwitters
was only published in 1993 after the artist Jack Ox learned that such
a recording existed.
Kurt Schwitters. Ursonate.
WERGO Schallplatten. Mainz 1993.
commentary by Hans Burkhardt Schlichting, 20th of September 1999