As the name of the cock in the play : Chanticleer is pronounced Chante-clear.
As the name of the breed of chicken : Chantecler, is pronounced Chante-clair. see post 8 for spoken words at Dictionary page.
As a side note, . Both Brother Wilfrid and the dictionary state Chantecler means "sing...
Two pronunciations depending on how you spell it. Turn your sound on and click
to hear both of them spoken on this page:
http://www.dictionary.com/browse/chanticleer
Best,
Karen