I've heard a lot of performances of Elijah, a well-crafted work that used to be more popular than it is these days, and this is an extremely good one. The musical direction is to the point, Fleming and Terfel are at their best, and the other soloists are extremely good. (Although I wonder if they originally tried to get an alto better-known than Patricia Bardon.) I'm also glad that there are enough soloists on hand: Mendelssohn asked for at least 8, and older recordings that make do with 4 (turning all octets into choruses, for instance) seriously distort his plan.The pitch of the performance is a result of the use of period instruments and the tuning standard selected. There was no single pitch standard at this period, but the one selected is plausible and may be one heard by the composer. It is not a "transposition" or a distortion.