The Met shares ‘Gudonov,’ ‘Ghosts’ this weekend

The Metropolitan Opera has its own set of Halloween weekend treats on tap with this weekend’s livestreams, including a 2010 production of Mussorgsky’s Boris Gudonov today a 1992 presentation of “The Ghosts of Versailles” on Saturday and a 2011 rendition of Philip Glass’ “Satyagraha,” all at 7:30 p.m. and free via metopera.org.