An opera by this composer ends with an aria by the tenor lead, consisting entirely of thirty repetitions of an ascending Phrygian scale. In another opera by this composer, the countertenor lead sings a second-act hymn beginning "Thou dost appear beautiful," and an offstage chorus quotes Psalm 104. At the start of another of his operas, a white square in the lower-right corner of the stage highlights two people seated at desks. That opera has a solo violinist dressed as the (*) title character and includes a chorus that 
An opera by this composer ends with an aria by the tenor lead, consisting entirely of thirty repetitions of an ascending Phrygian scale. In another opera by this composer, the countertenor lead sings a second-act hymn beginning "Thou dost appear beautiful," and an offstage chorus quotes Psalm 104. At the start of another of his operas, a white square in the lower-right corner of the stage highlights two people seated at desks. That opera has a solo violinist dressed as the (*) title character and includes a chorus that counts beats and sings solfège syllables. This composer's collaboration with Robert Wilson has scenes like "Train," "Trial," and "Spaceship" spaced between five knee plays. For 10 points, name this minimalist composer of Akhnaten, Satyagraha, and Einstein on the Beach.
An opera by this composer ends with an aria by the tenor lead, consisting entirely of thirty repetitions of an ascending Phrygian scale.
Philip Glass [or Philip Morris Glass]