I possess every recording of these leçons that is currently available. As a soprano with a deep love for the baroque repertoire, I have performed these with fellow singer Katrena Mitchell in our duet ensemble "Sounds Sublime". The pieces themselves are as familiar to me as a byte is to a computer expert...
... and there is simply no recording to compete with this one.
It's exquisite from the very opening. In particular when Sophie Daneman and Patricia Petibon sing together, the work between the two and the ravishing vocal blend is something of which dreams are made. The pronunciation of the Latin is beautifully French, as it would have been performed at the time. The ornamentation and musicianship here is superb, as one would expect from a recording conducted by William Christie.
But the two singers are the highlight here, in this most ravishing of performances.
I have an enormous admiration for Emma Kirkby, but the recording of this work with her and Judith Nelson is stiff, unemotional, and blank in comparison with this recording. (I do not admire Nelson's voice, either, however much I admire Kirkby's.) The vocal beauty on this recording is truly sublime - this CD is one I listen to over and over again, always with a sigh and a smile.
Other versions, including a surprisingly bland rendition by Gens and Sandrine Piau, and two good countertenor versions and one not-so-good (oh dear, Deller...) are available, but nothing approaches the shimmering beauty of this version.
The pieces themselves are of heavenly beauty. I've never performed them without seeing audience members weeping with the beauty of the music.
I recommend this CD strongly.