I've always loved the live version of "Patch It Up" and why Elvis only sang it twice in concert is beyond me. Maybe he thought "Suspicious Minds" was a better show-stopper, or maybe he thought the song was to demanding. Or maybe he plain didn't like it.
Watching the version from Opening Night in Las Vegas on August 10, 1970, I think it's pretty safe to rule out at least two of my three guesses. Elvis was in great shape in the summer of 1970, and it's pretty obvious he enjoyed performing the song.
So why did he sing it only one more time, two days later? You tell me. And before I sign off I have one more question: where can I order Elvis: That's The Way It Is - The Complete Works?