For 10 points, name this minimalist composer of Satyagraha, Akhenaten, and Einstein on the Beach.
One opera by this composer begins with a prelude repeating "Open are the double doors of the horizon/Unlocked are its bolts." That opera by this composer contains a second-act recitation of Psalm 104, following a duet in which the title character reads love poems to his wife, who is in a lower register. Another opera by this composer contains an electric organ accompanying repeating countdowns as well as "All Men are Equal" and "Mr. Bojangles" in its first "Trial," which precedes the second of the five "knee plays." For 10 points, name this minimalist composer of Satyagraha, Akhenaten, and Einstein on the Beach.
One opera by this composer begins with a prelude repeating "Open are the double doors of the horizon/
Philip Morris Glass