I think that thse cantatas are normally performed by a tenor, but the mezzo Lorraine Hunt Lieberson gives a very moving performance of these two cantatas: powerful communication with the listener / audience is one mark of a great artist, and she has shown this consistently for as long as she has been in the public eye.
Cantata 82 (Translated: "It is enough") has special power as she had just lost her younger sister to lung cancer.
Craig Smith and the orchestra of Emmanuel Music are a very very experienced and sound Bach team, and their performance is excellent.
For me this CD has special value, now that Lorraine Hunt Lieberson herself has died (also cancer) so tragically early.
Even if you have other copies of these cantatas, listen to this one - and buy it.