Klemperer in Rehearsal and Performance
Taken from the Great Otto Klemperer's fabled "last concert" from 1971 with the New Philharmonia Orchestra.
Rehearsal of Brahms' 3rd Symphony and Beethoven's 4th Piano Concerto w/ Daniel Adni.
Performance starts at 31:39 and is only of the first movement of Brahms's 3rd.