This year is the 75th anniversary season of the National Symphony Orchestra, as well as the 10th year of the Leonard Slatkin era. So, as we recommended to you people in last week’s Classical Music Agenda, this DCist was in the Kennedy Center Concert Hall last night for the second of two performances by the NSO, kicking off the big season as part of the Kennedy Center Prelude Festival. (The Post and Ionarts were there…

The only good thing about the end of summer for this DCist (sniff) is that we can hear more good music this week, and that means that your Classical Music Agenda finally has something to report. Unfortunately, if your budget is limited, most of the city’s free concert series, but not all, do not begin their fall seasons until October. Nevertheless, thanks to our tireless searching on your behalf, we still have a few free…