Jan-Erik Kjesth was told by Gordon Stoker himself
he did not play piano on All Shook Up and
when Hoyt Hawkins was suggested Gordon said "He
may have played piano on All Shook Up because
that was me singing the duet with Elvis. I was
singing directly across the mike, I was just on
the other side of the mike from him".
As for Dudley Brooks comments about playing on
the track, and that it was tried out more than
one attempt, it's possible, as was the case of
One Night Of Sin and One Night.
(Above source = "Elvis The Man & His
Music # 71")
In March of 2007, Sony decided to go through all of Elvis' masters. They retransferred everything and remastered all tracks including repairing as many clicks, pops, bad edits and dropouts as they could. They have used these newly mastered recordings on their new releases since 2007 including budget soundtracks, 'Legacy' releases, the 30 disc 'Complete Elvis Presley Masters' collection and the Franklin Mint package.