Thanks. Great footage.
It's neat that he sang a bit of "I Was The One". It was an unusual choice in 1970, but there was a time, in 1956, when the song was a highlight of his live shows.
Regarding "Get Back", the song is of course a classic now, but at that moment it was only a little over a year since it had been recorded and released by The Beatles.
I remember when the "Little Sister" / "Get Back" medley was first released in the "Elvis Aron Presley" 8-LP set (40 years ago, folks). It was a nice surprise and one of the main features of the set (hey, and an unreleased song). James Burton sure adds some funky guitar licks, and copies John Lennon's solo faithfully.