I have a live version that's marked "12-04-79 LA Forum" (I only have Sara, not the whole concert) and she's a lot more intense at the end than she usually is for "Sara". She kind of growls through a couple of the end bits. It's just a lot different than other versions of "Sara" I've heard. Also at the beginning Lindsey introduces it as "A very pretty song sung by the very beautiful Stevie Nicks." Must have been a rare night when they were getting along!