This time of year, with so many concerts on the schedule, it is sometimes hard to separate what is essential from the rest. If we had to pick this week — and we do have to pick, every week — it would be as follows. >> Last week’s stellar concerts from the National Symphony, with Osmo Vänskä and Leonidas Kavakos, were scandalously underattended. If you like good music but were unable to hear the Finnish…

We don’t normally include musical events in Baltimore in this agenda, for obvious reasons. However, we are leading off with a singular opportunity up in Charm City this week, the production of Jake Heggie’s opera Dead Man Walking (premiered by San Francisco Opera in 2000) at Baltimore Opera. This new opera was a smash success at its premiere and has been revived in several more successful productions in the years since. Having just gone up…