The Grammy- and Oscar-winning songwriter behind the musicals Wicked, Pippin and Godspell is working on “his first opera, intriguingly titled Seance on a Wet Afternoon, which will have its world premiere Sept. 26 at the Granada in Santa Barbara. … Schwartz wrote both the music and libretto for Seance, a psychological thriller about a medium, her husband and the spirit of their deceased 11-year-old son.”