Filmed during rehearsals for the premiere of Stockhausen's monumental work Momente. The revealing rehearsal sequences are interspersed with Stockhausen speaking of his youth, work process and the genesis and meaning of Momente.
| Actor | Role |
|---|---|
 Karlheinz StockhausenHimself | Himself |
 Martina ArroyoHerself | Herself |
| AAlfons KontarskySelf | Self |
| AAloys KontarskySelf | Self |