Glenn Gould's U.S. Television Debut: Bernstein Conducting Bach's Keyboard Concerto No. 1 in D minor
https://www.youtube.com/watch?v=9Nx09pigZRI
Performing the first movement of Bach's Keyboard Concerto No. 1 in D minor, BWV 1052, with Leonard Bernstein conducting the New York Philharmonic. Gould's performance begins at 18:03.
Originally aired on January 31, 1960 on CBS Television as part of its Ford Presents series, this program was entitled "The Creative Performer." The entire show is actually three performances — by Gould, the soprano Eileen Farrell (singing the "Suicidio!" aria from *La Gioconda*), & Igor Stravinsky (conducting the last three scenes of his ballet *The Firebird*) — punctuated with scintillating musicological lectures by Maestro-Professor Bernstein, who is arguably the star of the show.
Though I recommend watching the program in its entirety, here's a time-stamped playlist, in case you'd like to jump to any given section: