"50 Years of New Music in Darmstadt" Col Legno WWE 4CD 31893
(4 CDs)
| Kreuzspiel (3rd movement only: World Premiere recording) | work number 1/7 | 1951 |
| Romolo Grund - oboe, Friederich Wildgans - bass clarinet, Irmela Sandt - pft, Hans Rossmann, Bruno Maderna, Wili Crumpsheller, Paul Geppert - percussion conducted by K. Stockhausen | recorded 21st July 1952 | 3'31" |
| Klavierstück XI | work number 7 | 1956 |
| David Tudor | recorded 8th September 1958 | 5'55" |
This CD includes Karel Goevvaerts sonata for 2 Pianos 2nd Movement