Leonard Bernstein and Glenn Gould.
Concert Hall Curveballs are those unexpected things that happen in the concert hall. The things they edit out of a CD. With some 1,500 live performances a year, Performance Today runs into a lot of these funny situations, but here's one that really takes the cake. Here's Leonard Bernstein and pianist Glenn Gould, at a performance of the Brahms Piano Concerto No. 1 with the New York Philharmonic.