Conversation so far:
What is a librettist?
A librettist is a writer of a libretto.
What is a libretto?
A libretto is the text used in, or intended for, an extended musical work such as an opera, operetta, masque, oratorio, cantata or musical.
How was Jean-Philippe Rameau's relation with his librettists?
Unlike Jean-Baptiste Lully, who collaborated with Philippe Quinault on almost all his operas, Jean-Philippe Rameau rarely worked with the same librettist twice.
Why didn't Jean-Philippe Rameau work with the same librettists twice?
Jean-Philippe Rameau was highly demanding and bad-tempered, unable to maintain longstanding partnerships with his librettists.
Were any exceptions noted in the article about Jean-Philippe Rameau not working with the same librettists on multiple operas?
Jean-Philippe Rameau didn't work with the same librettists twice with the exception of Louis de Cahusac, who collaborated with him on several operas.
Why was de Cahusac an exception?
Only Louis de Cahusac managed to agree with Jean-Philippe Rameau permanently.
Were any of Cahusac and Rameau collaborations listed in the article on Cahusac?
Louis de Cahusac and Jean-Philippe Rameau's operas were Les fêtes de l'Hymen et de l'Amour, Zaïs, Naïs, Zoroastre, La naissance d'Osiris, Anacréon, and Les Boréades.
What other librettists besides Cahusac did Jean-Philippe Rameau work with?
Pierre-Joseph-Justin Bernard worked with Jean-Philippe Rameau on Castor et Pollux.

Question: What did he work on with Voltaire?
Self-contained rewrite: What did Jean-Philippe Rameau work on with Voltaire?