By twenty-six Mara was invited to present an evening program at the Conservatory’s new hall. The audience expected virtuosity, familiar shapes of sonata and rondo. What they received was an arrival—a staged ceremony of machines and musicians moving into light. The Opus instruments sang in counterintuitive measures: the glass bow rang when the pianist’s left hand touched a pulley; the breath-chanter harmonized only when the percussionist tapped a metal leaf at precisely the moment a dancer inhaled. The score, which Mara called the Opus Creator, had rules written like engineering blueprints and annotated like love letters.