Unidentified Nicky Hopkins Instrumentals

update: Mark Mattson has identified the number as "Lucky Old Sun" - wow!

There may be others, but I am right now pondering two distinct instrumentals that Nicky does out of "Lady Sleeps" with the JGB in the last month or so of his run with the band.

11/23/75: about 1:38:30ff here --> https://ia600902.us.archive.org/9/items/jgb1975-11-23MackeyAuditoriumBoulderCO/jgb1975-11-23MackeyAuditoriumBoulderCO.mp3

He announces that one before as one of his originals, I think.

12/19/75: about 51:30ff here--> http://www.archive.org/serve/jgb1975-12-19WinterlandArenaSanFranciscoCA/jgb1975-12-19WinterlandArenaSanFranciscoCA.mp3 a little peppier, sounds kind of Beatles-ish to me (though it's not "Mother Nature's Son")

Help!