On the subject of live orchestral concerts in Leningrad, I was there as a student in 1966. I attended a concert of Tchaikovsky's symphonies 4, 5, 6 by the Leningrad Philharmonic. The conductor was a lady who was none too thin. Fatigued by the travelling and bored by the the very average playing I fell asleep. I was awakened by a sharp dig in the ribs from the next chair, and the voice of another none too thin lady saying "If you want to sleep GO HOME. If you want to hear music STAY AWAKE!".
Fair enough, of course, and just one of the many invocations I had from none too thin Russian ladies during my trip (on buses etc...). But I did ask our guide why the famous Leningrad Philharmonic was so... well, boring. The answer was:
"You must understand that Russia is a very big place".
"The first 11 Leningrad Philharmonic orchestras are currently on tour. This is Leningrad Philharmonic number 12."