This interpretation with Klemperer and these two giant singers is out of this world ...
There exist only one other interpretation perhaps rivaling it...
But the best possible version dont exist...
It will be Wunderlich and Ferrier for me...
The luminous honey hue of Wunderlich voice with the never before heard deep somber subterranean voice of Ferrier here....( or Marian Anderson who is only rival)
I am in love with contraltos voices...I want to marry one... In my next life...