It is really a treat to listen to these Bayreuth broadcasts with singers who are considered gods and goddesses today. Nilsson and Windgassen may have been taken for granted because they always did these roles well. The famous DG set remains a classic, yet it's fascinating to hear how a singer grows in a role, how they change or how an interpretation changes over a number of seasons. Both artists are in great shape here, singing in their penultimate Bayreuth season.The supporting cast is excellent, especially the unappreciated Gerd Feldhoff (whose brother was also a bass and sang at Bayreuth). His colorful, distinctive voice is heard to great advantage as Kurvenal. A pity his Amfortas was not heard on the Bayreuth broadcasts of Parsifal when he was singing it there (Thomas Stewart, no slouch himself, was heard instead). Böhm makes no cuts and still gets through the opera more quickly than most, making it possible to fit one act to a disc without interruptions.The sound is excellent, some weird thumps not withstanding. If you're a Bayreuth archivist or love the soloists, you'll enjoy this performance.