These were excerpts from On and off the record, a film made in 1959 featuring Gould.
I personally think this is a bit exaggerated, but Gould seemingly wanted a career in opera hahaha.
First part of video: Schubert Symphony no 5 first movement played on piano by Gould. 0:00
Second part: Bach Partita II Sinfonia played on piano by Gould. 0:45
