“Tabula Rasa.” Many know the term to mean “blank slate,” but a more proper definition might be “erased slate.” That’s the idea behind composer Felix Jarrar and librettist / director Brittany Goodwin’s “Tabula Rasa,” which has its world premiere on May 4, 2018, as part of the New York Opera Fest, started. The concept of reformulating ideas to create new and {…}