The Klingon Opera 'U'

Unconscious forces brought me to the klingon opera 'U'.
The opera characters sang in klingon language, the music played with klingon instruments and the stories parts of the klingon myths. The Klingonians understood; for me as part of the astonished rest  a human confusion. But two times the audience was united for the collective death scream.
If Marc Okrand, the creator of klingon language, was also screaming?! This will stay an untold secret...