Ellen Reid, whose arresting opera “p r i s m” won a Pulitzer in 2019, joins the New York Philharmonic for the première of “When the World as You’ve Known It Doesn’t Exist,” Feb. 20-22, at David Geffen Hall. Reid wrote the piece for “Project 19,” a multiyear series honoring the passage of the Nineteenth Amendment, for which the Philharmonic has commissioned works from nineteen distinguished women composers. The initiative also presents Tania León’s “Stride,” nestled among warhorses by Brahms and Strauss, Feb. 13-18.