If you have the slightest interest in contemporary opera or modern drama, you must see Philip Glass’s Akhnaten, scheduled for one more performance by Long Beach Opera on Sunday, March 27. It is a brilliant update of Wagner’s idea of the Gesamtkunstwerk, in which Glass’s music, staging by Andreas Mitisek, choreography by Nanette Brodie, and video projections by Frieder Weiss all combine into one amazing whole. At the heart of the work is Glass’s monolithic score and libretto. The story itself is a series of tableaux depicting the rise (Act 1) and fall (Act 3) of Akhnaten and his dangerous