I came across this performance of Mozart's Great C-minor Mass on YT. It was labeled "Best performance"). While the overall performance is certainly not the best I've ever heard, I was charmed by the soprano soloist: Dorothee Mields (who specializes primarily in Baroque music).
OK, there are a couple super-high notes that are a little off-center (the danger/thrill of live performance), but I love her pure tone and her expressive use (and non-use) of vibrato. Here is her performance of "Et incarnatus est." (Unfortunately the person who made this excerpt cut off the instrumental coda. But you can hear the whole mass at the link above.)