Beethoven's Seventh Symphony in A Major (2nd Movement), René Leibowitz conducting the Royal Philharmonic Orchestra in 1961 at the Assembly Rooms at Walthamstow Town Hall.
It is possibly not so well known a recording for purely snobbish reasons - it was a recording made for a boxed set by the seriously uncool Reader's Digest. Nevertheless, it is interesting because Leibowitz, (a serious composer in his own right and student of Ravel and Schoenberg), is the first known conductor to have recorded Beethoven's symphonies following Beethoven's actual original metronome markings. It has a much fresher and less ponderous approach than the interpretation of Karajan, who makes far too heavy weather of this piece, in my view.