(Photo Credit: Zdeněk Sokol) As part of its “Musica non grata” series, the National Theatre Opera in Prague is set to present Erwin Schulhoff’s “Flammen” for the first time since its world premiere in 1932. The opera opens on June 12, 2022 and runs through Nov. 22, 2022. The work, which is a unique take on the Don Juan myth, {…}