Following the war, another classic recording is the 1952 performance at the Bayreuth Festival with Martha Mödl and Ramón Vinay under Herbert von Karajan, which is noted for its strong, vivid characterizations and is now available as a live recording. In the 1960s, the soprano Birgit Nilsson was considered the major Isolde interpreter, and she was often partnered with the Tristan of Wolfgang Windgassen. Their performance at Bayreuth in 1966 under the baton of Karl Böhm was captured by Deutsche Grammophon – a performance often hailed as one of the best "Tristan" recordings.