A Space Odyssey.
One work by this composer features a "Grand Hysterical Scene" that imitates the mad scenes of bel canto opera, and that piece is one of two that this composer wrote for seven instrumentalists and three vocalists, each of whom embodies a set of five emotional states identified by the composer. In addition to Aventures and Nouvelles Aventures, he wrote a piano etude in which one hand silently holds down some keys, resulting in gaps in the other hand's figuration. In another etude, the left hand plays only black keys while the right hand plays only white. Those etudes are "Touches bloquées" and "Désordre." He referred to a Karl Popper essay in the title of his piece (*) Clocks and Clouds, and a prelude for twelve car horns opens his only opera. That opera tells of Nekrotzar's arrival in Breughelland to announce the impending apocalypse. This composer pioneered a musical texture in which a dense web of moving lines creates a mass sound, which he termed "micropolyphony." For 10 points, name this composer of the opera Le Grand Macabre, whose works Lux Aeterna and Atmosphères were featured in 2001: A Space Odyssey.
One work by this composer features a "Grand Hysterical Scene" that imitates the mad scenes of bel canto opera, and
György Ligeti