Annie Proulx, the author of Brokeback Mountain, says a new opera based on her short story offers new insight into the story's characters.

The libretto premiered Tuesday at the Teatro Real in Madrid, Spain.

Proulx told the AP that the opera, which follows a 2005 film starring Heath Ledger and Jake Gyllenhaal, goes where the short story and film could not.

“I understood the opera would give room, which the short story did not and which the film wasn't particularly interested in doing, to explain and to open out and to make a more gradual development of the character of Ennis from this very tight closed, frustrated homophobic gay man who just can't get it.” (The video is embedded on this page. Visit our video library for more videos.)

The production stars Tom Randle as Jack Twist and Daniel Okulitch as Ennis del Mar.

“It's an operatic tragedy,” composer Charles Wuorinen told The Los Angeles Times of Proulx's cowboy love story, “and it embodies an up-to-date form of a problem people have had forever. Stock problem. Stock tragic characters. Loss. We've had that right from when Euridice dropped dead in Orfeo.”