In this video Bernstein introduces in a very simple and effective way, what the listeners should expect from a performance of the Bach’s Concerto No.1 in D minor (BWV 1052) by him, Gould and the New York Philharmonic Orchestra. Gould here is 28 years old.
The whole concert is at the bottom of the page.
So, Glenn Gould must decide, and I as his accompanist must decide with him, all kind of matters of tempo and phrasing and everything else, that we feel necessary to convey Bach’s deepest musical meanings to you the listener.
In any case, what it will not be, is a dull literal playing of the notes, if I know Mr. Gould.