Although this is a re-issue, and not a re-mastering, everyone with any interest in Wagner, and Tristan and Isolde, simply must have this wonderful set. To be fair, it's really all about Linda Esther Gray, and the outstanding WNO under Goodall. The WNO are brilliant here, and sympathetically recorded by the Decca engineers. You'll hear subtleties in the playing that are lost in other versions, and you can forget about Goodall's supposed ultra-slow tempi, for here he's surely perfect. (The Prelude is actually over a minute faster than Karajan.) But it's Goodall's handling of key moments that is so seductive - and thrilling.