I have always considered the Trovatore Leonora to be one of Callas's very greatest roles. Here , less obscured by her undoubted dramatic gifts, we can enjoy the pure musicality of her singing. The timbre is perfect for Leonora - dark, plangent & (apart form at the very top of her register)surpassingly beautiful. The role displays her perfect legato, incredible breath control & accurate coloratura. She also has a wonderful understanding of just how to phrase a Verdian cadenza, quite different from anything she would do in Bellini or Donizetti. You only have to hear her first few phrases to know that this Leonora is an aristocrat. This is where I find Leontyne Price lacking. With undeniably the right sound for the role, she often mars her singing with sketchy coloratura & unmusical cadenzas. Added to Callas, the rest of the cast is just about as perfect as was possible at the time & a good deal better than anything we could manage today. True, Di Stefano lacks the requisite weight, but he sings with such face, it is readily forgiven. Panerai, Barbieri & Zaccaria could hardly be bettered & Karajan was at this time was the perfect conductor for the project. He conducts with great style & dash, while at no time apologising for the occasional vulgarities in the score. More modern recordings are uncut & here we have the cuts traditional at the time, but at least we get one verse of Leonora's cabaletta "tu vedai". The sound has also been remarkably well freshened up in it's present transfer. Unless you really have to have modern stereo digital sound, buy it. And, even if you have another recording, acquire this as well. You won't regret it!