For 10 points, name this composer of Cantus Memoriam Benjamin Britten and Spiegel im Spiegel, the latter of which is often used in film scores, an Estonian composer known for his sacred minimalism.
A treatise by this man describes how a composer brings a pot onstage and cooks food in it to make music. This composer began one memorial piece with three beats of silence and that piece is organized so that the tempo of the double bass is one half that of the cello, which is one half that of the viola which in turn is one half that of the violins. In another work by this composer the violin uses "A" as the focal pitch, and it plays pairs of notes one above and below until they are two octaves apart. That work incorporates (*) crystalline tintinnabulation and reflects the nature of infinity with a title meaning "Mirror in the Mirror." For 10 points, name this composer of Cantus Memoriam Benjamin Britten and Spiegel im Spiegel, the latter of which is often used in film scores, an Estonian composer known for his sacred minimalism.
A treatise by this man describes how a composer brings a pot onstage and cooks food in it to make music.
Arvo Part