This performance has no common ground with Tanglewood (which was the same year as BPO and timings are probably much closer). If anything, timings and mood are much closer to the RCO (few months earlier, in June of the same year) but the performance here is even more extreme. The playing is actually superb, and you forgive some brass fuck-ups in the second movement because the overall effect is so draining. The sound is very good. It's a fantastic live recording.