His friend Andrew L. Pincus, the music critic of The Berkshire Eagle, recalled in a recent tribute that Mr. Krainis could frequently be seen at the yearly Tanglewood Festival of Contemporary Music in Lenox, Mass., and that his assessments of new works were insightful. "He had perfect pitch for both quality and cant," Mr. Pincus wrote, "and could be merciless in his judgments of fakery."