Nono himself and Yuri Lyubimov wrote the libretto. It premiered at the Teatro alla Scala on 4 April 1975, conducted by Claudio Abbado. Lyubimov directed the original production.
The libretto for the opera was written by Nono and Lyubimov. It premiered at the Teatro alla Scala on April 4th, 1975, with Claudio Abbado conducting and Lyubimov directing the original performance.