Eleven-fifteen, and Miss Garden has arrived. She is armed, having brought along her heaviest shillalah. Mr. Prokofieff is on his feet. He takes off his coat. The medieval face of Mr. Anisfeld vanishes. Tap, tap, on the conductor's stand. Lights out. A fanfare from the orchestra's right. Last rehearsal for the world premier of a modernist opera! One winter morning years ago the music critics of Paris sat and laughed themselves green in the face over the incomprehensible banalities of an impossible modernist opera called "Tannhäuser." And who will say that critics have lost their sense of humor. There will unquestionably be laughter before this morning is over. * * * * * Music like this has never come from the orchestra pit of the Auditorium. Strange combinations of sounds that seem to come from street pianos, New Year's eve horns, harmonicas and old-fashioned musical beer steins that play when you lift them up. Mr. Prokofieff waves his shirt-sleeved arms and the sounds increase. There is nothing difficult about this music--that is, unless you are unfortunate enough to be a music critic. But to the untutored ear there is a charming capriciousness about the sounds from the orchestra. Cadenzas pirouette in the treble. Largos toboggan in the bass. It sounds like the picture of a crazy Christmas tree drawn by a happy child. Which is a most peculiar way for music to sound. But, attention! The curtain is up. Bottle greens and fantastic reds. Here is a scene as if the music Mr. Prokofieff were waving out of the orchestra had come to life. Lines that look like the music sounds. Colors that embrace one another in tender dissonances. Yes, like that. And here, galubcheck (I think it's galubcheck), are the actors. What is it all about? Ah, Mr. Prokofieff knows and Boris knows and maybe the actors know. But all it is necessary for us to know is that music and color and a quaint, almost gargoylian, caprice are tumbling around in front of our eyes and ears. And there is M. Jacques Coini. He will not participate in the world premier. Except in spirit. Now M. Coini is present in the flesh. He wears a business suit, spats of tan and a gray fedora. M. Coini is the stage director. He instructs the actors how to act. He tells the choruses where to chorus and what to do with their hands, masks, feet, voices, eyes and noses. The hobgoblin extravaganza Mr. Prokofieff wrote unfolds itself with rapidity. Theater habitués eavesdropping on the rehearsal mumble in the half-dark that there was never anything like this seen on earth or in heaven. Mr. Anisfeld's scenery explodes like a succession of medieval skyrockets. A phantasmagoria of sound, color and action crowds the startled proscenium. For there is no question but that the proscenium, with the names of Verdi, Bach, Haydn and Beethoven chiseled on it, is considerably startled.