"Philip Glass' one act chamber opera In the Penal Colony was composed in 2000. The libretto is by Rudolph Wurlitzer and based on a story by Franz Kafka."

"The origins of Philip Glass' Voices, for didgeridoo and organ was specific: a commission from the city of Melbourne, Australia, in 2001. Yet the instrumental combination works so well that it seems almost foreordained, and Glass went on to write further music for the soloist here, Mark Atkins. In this performance, the didgeridoo and organ tracks were recorded separately, in Australia and upstate New York, respectively, and in Glass' metronomic world this works well enough. Yet one hopes that this release on Glass' Orange Mountain Music label is enough to spur future live performances with both players in the same room. The addition of the didgeridoo to the relatively homogeneous texture of Glass' organ writing is dramatic, but it doesn't disturb the basic shifting fields of the composer's music. It just deepens their color and variety in an immensely attractive way."