If you only want one recording of Mahler's wonderful Das Lied von der Erde, this recording will last for a lifetime. I want to emphasize two points for this view.
First, on this record, Rafael Kubelik is conducting the Bavarian Radio Symphony Orchestra. Kubelik made this orchestra to become one of the finest Mahler orchestras in the sixties, thus contributing to the Mahler-boom. Kubelik's Mahler was once discarded as lightweight, especially beside Bernstein. Today the opinion is rather that Kubelik provided one of the best representations of the truly Bohemian Mahler while Bernstein's Mahler is too much of Bernstein and less of Mahler. Anyway, it is a marvellous orchestra playing on this disc under a classic Mahler conductor, caught live in their own Herkulessaal in Munich with its excellent acoustics. Sonic quality is also excellent. And the audience is spellbound, completely silent.
Second, the soloists are the very best for this work. The Austrian tenor Waldemar Kmentt is perhaps not the most famous tenor, but he was in his prime during the sixties and early seventies. And his contribution on this record must be compared with Wunderlich and Patzak, as the finest interpreters of tenor part of this work. Few can match the desperate tone he produces in "Das Trinklied". And he is as delicate and charming as Wunderlich is in "Der Trunkene im Fruhling" and "Von Der Jugend". Janet Baker, on the other hand, needs no defence in this context. Together with Christa Ludwig, she is the best voice for Das Lied von der Erde. We have her voice in recordings of this work with Haitink, Kempe, and Leppard, but the evening of the present recording was indeed a special occasion. Her performance is just outstanding, especially of the final movement.
To sum up: A remarkable recording, spaciously recorded, and a great event. Strongly and warmly recommended.