| recordings |
|---|
| 1965-07-26 – 1965-07-27 | Sonatas and Interludes: IX | | Yuji Takahashi | 3:45 |
| 1971 | Sonatas and Interludes for Prepared Piano: IX. Sonata ap. - :A: - :B: | | John Damgaard | 4:34 |
| 1974-12 | Sonatas & Interludes for Prepared Piano: Sonata IX | | John Tilbury | 4:37 |
| 1975-12 | Sonatas and Interludes for Prepared Piano: Sonata IX | | Yuji Takahashi | 4:02 |
| 1986-04-08 – 1986-04-09 | Sonatas and Interludes for Prepared Piano: Sonata IX | | Darryl Rosenberg | 3:52 |
| 1991-12-06 | Sonatas and Interludes: Sonata 9 | live | Mario Bertoncini | 6:15 |
| 1992-06 | Sonatas and Interludes: Sonata 9 | | Nigel Butterley | 3:55 |
| 1994-12-17 – 1996-12-18 | Sonatas and Interludes for Prepared Piano: Sonata IX | | Philipp Vandré | 4:20 |
| 1994-12-20 | Sonatas and Interludes: Sonata IX | | Louis Goldstein | 4:12 |
| 1996-09-01 | Sonatas and Interludes: Sonata 9 | | Markus Hinterhäuser | 4:25 |
| 1998-07-11 – 1998-07-13 | Sonatas and Interludes for Prepared Piano: Sonata IX | | Boris Berman | 4:28 |
| 2005-06 | Sonatas & Interludes: Sonata 9 | | Giancarlo Simonacci | 3:32 |
| 2011-10-07 – 2011-10-08 | Sonatas & Interludes: Sonata IX | | Cédric Pescia | 4:22 |
| Sonatas & Interludes for Prepared Piano: Sonata 9 | | Gérard Frémy | 4:24 |
| Sonatas & Interludes for Prepared Piano: Sonata IX | | Maro Ajemian | 4:06 |
| Sonatas & Interludes for Prepared Piano: Sonata no. 9 | | Joshua Pierce | 3:59 |
| Sonatas & Interludes for Prepared Piano: The Third Interlude Followed by the Third Four Sonatas | | Maro Ajemian | ?:?? |
| Sonatas and Interludes for Prepared Piano (1946-1948): Sonata IX | | Steffen Schleiermacher | 4:39 |
| Sonatas and Interludes for Prepared Piano: Sonata 9 | | Joshua Pierce | 3:49 |
| Sonatas and Interludes for Prepared Piano: Sonata no. 9 | | Joanna MacGregor | ?:?? |
| Sonatas and Interludes for Prepared Piano: Sonata no. 9 | | Aleck Karis | 4:28 |
| Sonatas and Interludes: Sonata IX | | Herbert Henck | 4:38 |
