Letters, of course, give only a rather incomplete score of the spoken sonata. As with any printed music, many interpretations are possible. As with any other reading, correct reading requires the use of imagination. The reader himself has to work seriously to become a genuine reader. Thus, it is work rather than questions or mindless criticism which will improve the reader’s receptive capacities. The right of criticism is reserved to those who have achieved a full understanding. Listening to the sonata is better than reading it. This is why I like to perform my sonata in public. But since it is not possible to give performances everywhere, I intend to make a gramophone recording of the sonata... (Kurt Schwitters “Signs in my Ursonate,” printed in the insert to
Ursonate: Original Performance by Kurt Schwitters, 1994)