erhältlich
| Entstehungsjahr | |
|---|---|
| O Herr, sei unser Hirte (NID: ) | 2006 |
| Oblectatio vespertina (NID: ) | 1970 |
| Oceano nox (NID: ) | 2008 |
| Octavia (NID: ) | |
| Ode an die Nacht (NID: ) | 2013 |
| Ode an die Nacht (NID: ) | 2013 |
| Ode an die Nacht (NID: ) | 2013 |
| of all stars the most beautiful (NID: ) | 2018 |
| Ohne Titel #3 (NID: ) | 2010 |
| Ohne Titel #7 (NID: ) | 2013 |
| Oktett (NID: ) | 1978 |
| On the run (NID: ) | 2010 |
| One and One (NID: ) | 2009 |
| Oneness (NID: ) | 2012 |
| Opening (NID: ) | 2022 |
| OPUS MINUS 7 (NID: ) | 1994 |
| Oratorium for the peace of man (NID: ) | 1989–1991 |
| ordentlich inhaltslos (NID: ) | 2018 |
| Orientalisch (NID: ) | 2006 |
| Ostarrichi St(r)icheleien (NID: ) | 1996 |
| Ouverture populaire (NID: ) | 2021 |
| Palmen im Wind (NID: ) | 2012 |
| Pan (NID: ) | 1999 |
| Paredes ilusorias (NID: ) | 2021 |
| parent parts (NID: ) | 2010 |