This specific movement is intended to evoke the atmospheric and supernatural elements of Shakespeare's The Tempest , which was adapted for the late 17th-century stage by Thomas Shadwell.
It is part of a "semi-opera," a Restoration-era English theatrical form that combined spoken dialogue with elaborate musical and dance interludes. purcell_the_tempest_z_631_curtain_tune
Many experts now attribute the majority of the score to , who likely wrote it for a revival of the play around 1712. This specific movement is intended to evoke the