GA 283
| Date | Title | City |
|---|---|---|
| 03 Dec 1906 | The Essence of Music I | Cologne |
| 12 Nov 1906 | The Essence of Music II | Berlin |
| 26 Nov 1906 | The Essence of Music III | Berlin |
| 10 Nov 1906 | The Essence of Music IV | Leipzig |
| 30 Sep 1920 | Questions and Answers I | Dornach |
| 30 Sep 1920 | Questions and Answers II | Dornach |
| 20 Dec 1920 | Questions and Answers III | Dornach |
| 07 Feb 1921 | Questions and Answers IV | Dornach |
| 02 Dec 1922 | Human Utterance Through Sound and Word I | Dornach |
| 07 Mar 1923 | Human Utterance Through Sound and Word II | Stuttgart |
| 08 Mar 1923 | Human Utterance Through Sound and Word III | Stuttgart |