RE: Best I've ever heard: Donna Summer at Fenway Park - World Series (1997?) I was shocked.
_________________________________________
I remember her A CAPELLA version. No background music, just her voice. As one commenter said: She hits and holds the word "free" in "land of the free" for almost 7 seconds during the fly-over- what an amazing voice...
For those who want to hear her rendition: Here's
The LINK