1969 Joan's Blooper: Sage mir, Vogel by Abt

JS flubs early in the piece (0:27), but the audience is more than willing to give her a second go at it. RB even tries to make light of the situation with a false start of his own.
Sage mir, Vogel im grünen Wald by Abt
From a 1969 Canada concert
Joan Sutherland, soprano
Richard Bonynge, piano