| Librettist | (Phonetic lyrics ("Martin Luther King").) |
| Date of composition | 1967 |
| Premiered | 1968, May 4th in Bowdoin, ME, United States |
| First published | Universal Edition |
| Dedicated to | Martin Moore |
| Approx. duration | 5 minutes |
| Spoken language | English |
| Instruments |
Voice (Mezzo-Soprano)
Flute Clarinet Violin Cello Piano |
| Autotranslations beta |
Luciano Berio: O King Luciano Berio: O King Luciano Berio: O King |