The movie version of Change Of Habit has
the original bass removed and is redone by bassist
Carol Kaye on September 3 1969 in post-production
of the film.
It is a guess that the unknown production number
MB1 is the instrumental track of Let Us Pray,
and MB4 is the instrumental track of Have A
Happy.
Credibility is given to this theory in the liner
notes of 'Today, Tomorrow & Forever' where
it states that Let Us Pray was recorded
on March 5 & 6. Until this release the recording
date has always been stated as just March 5.
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.