Give information on the song defying gravity from wicked for all my points

In Wicked, the song is the finale for the show's first act, when Elphaba discovers that The Wizard of Oz is not the heroic figure she had originally believed him to be. Realizing this, and despite Glinda's attempts to dissuade her, Elphaba vows to do everything in her power to fight the Wizard and his sinister plans against the Animals of Oz. She sings of how she wants to live without limits, going against the rules that others have set for her. During the song, Elphaba enchants a broomstick to levitate and, pursued by the Wizard's guards, rises from the stage above the angered citizens of Oz, who try in vain to "bring her down."

The song is heavily cinematic and comes to a climax for the final verse. The staging of this climax features several special effects. The actress playing Elphaba is lifted up into the air by a hydraulic launch system. The sequence relies heavily on around 60 moving lights, smoke, and wind effects.

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