Angel Island is located in San Francisco Bay, and from 1910 to 1940, it served as the West Coast's primary immigration facility. It also functioned as a detention center, where hundreds of thousands of people, primarily Chinese, were held in often brutal and dehumanizing conditions. The new opera, "Angel Island," expands on the story, and is running at BAM from Jan. 11-13. The show's composer, Huang Ruo, and director, Matthew Ozawa, join us for a preview.