Teatro Grattacielo has announced several upcoming events and collaborations taking place this fall. Opera at Gotham Park returns with a miniature performance of Jorge Sosa’s opera “Generación Perdida,”staring mezzo-soprano Eugenia Forteza. A series of video clips from the summer production of Sosa’s opera will also be shown. The performance on Oct. 18 is held alongside The Longest Table’s community {…}