The Los Angeles Opera scrapped plans for the world premiere of Mason Bates’ “The Amazing Adventures of Kavalier & Clay” this fall because of finances, and the work will instead open with a student cast at Indiana University’s Jacobs School of Music.

James Patterson, Suzanne Collins and Margaret Atwood are among thousands of writers endorsing an open letter from the Authors Guild urging AI companies to obtain permission before incorporating copyrighted work into their technologies.