Classical music has come back from summer vacation, and that means you actually have a choice of concerts this week. Most importantly, many of the city’s leading groups are opening the season with glittering events. Look for reviews next week. >> Washington National Opera is opening its fall season with one of the most popular operas in the repertoire, Puccini’s La Bohème (September 15 to 30). For all its audience-pleasing qualities, this opera is a…

TUESDAY Nextbook brings the hot and the hilarious to the DCJCC tonight, gathering Jonathan Ames (Wake Up, Sir), Lynn Harris (BreakupGirl.net, Miss Media) and Neal Pollack (Never Mind the Pollacks) for an “evening of erotic escapades.” The ideal way to get your J-Date in the mood. Tickets are available by calling 888-621-2230 between noon and 4 p.m., or can be purchased online at Nextbook. 1529 16th Street, NW, 7:30 p.m. WEDNESDAY A wise man once…