On "Just Pretend" CC Rider starts differently (incomplete) and Can't Help Falling In Love ends with the usual "Closing Vamp". On "All Shook Up" we get a complete CC Rider and Can't Help Falling In Love ends without the Closing Vamp. It seems that at least for CHFIL this ending isn't original (you can hear the horns are faded out) and self-remixed.
Also there's an error on the backcover of "All Shook Up". Track 20 according to that cover is American Trilogy but as listed above it's indeed America The Beautiful.
"Just Pretend" has an (later added?) echo through the whole recording, problably to cover up the mass distortion during for example the loud singing of Elvis on How Great Though Art.