“The 90-minute show is preceded by short but telling film clips from six Japanese Americans and one Caucasian American relating their experiences following Pearl Harbor. This is an eloquent and moving stage-setting device. But “An American Dream” is an opera that would provide its own remarkable impact regardless of any introductions. Peter Kazaras’ staging, cleverly adapted to a smaller and less traditional space, puts the characters exactly where they need to be with an excellent economy of gesture.”