The highlight of this 1970 performance of Tristan und Isolde is Ingrid Bjoner, captured at a pivotal moment in her career as she moved into the heavier Wagner repertoire. The voice carries the necessary weight for the role while still retaining the innocence and clarity that defined her work in the 1960s. Hans Beirer brings a sturdy tenor to Tristan, projecting reliably over the orchestra, though his pitch sags in some of the more lyrical passages. Ruth Hesse offers a radiant Brangäne, her middle register lush and resonant, with an assured top that gives the role both warmth and security.

Horst Stein conducts a performance of dramatic tautness, maintaining tension without lapsing into excess.