La damnation de Faust
The tritone was also exploited heavily in that period as an interval of modulation for its ability to evoke a strong reaction by moving quickly to distantly related keys. For example, the climax of Hector Berlioz's "La damnation de Faust" (1846) consists of a transition between "huge B and F chords" as Faust arrives in Pandaemonium, the capital of Hell. Musicologist Julian Rushton calls this "a tonal wrench by a tritone."