These recordings by Evgeny Mravinsky and his Leningrad Philharmonic, taped in the autumn of 1960 while they were on tour in London, are among the absolute classics of the catalog. They are readings of hair-raising intensity--the finale of the Fourth is marked allegro con fuoco, and if you want to know what con fuoco means, all you have to do is listen for a moment. No one else has ever had the nerve, or the ability, to play the music this way. The treatment is very Russian: the extremes are more extreme, the passions more feverish, the melancholy darker, the climaxes louder. In that department, the development section of the first movement of the Pathètique has to be heard to be believed. The sound is remarkably good for the time, a little edgy in the loudest pages but wonderfully present, just like the performances themselves.