Music professor Richard Wilson premiered “The Prelude” and “Scene 1,” scenes from his opera about much-maligned 10th century English king Ethelred the Unready, with the American Symphony Orchestra. Wilson wrote the opera, his first, after receiving a Guggenheim Fellowship in 1992. “I wanted to do something different with the award,” he said. “I thought it would be amusing to try.”     The Poughkeepsie Journal