If you’re an opera lover looking for something new, tune in this Saturday at 1 PM for Dolores Claiborne from San Francisco Opera. This chilling tale is based on a Stephen King novel, with the libretto by J. D. McClatchy and music by Tobias Picker. Critics have called this the best of Picker’s five operas, perfectly capturing the desperation of the title character, ably sung by Patricia Racette in this San Francisco opera world premiere.