Annex Studio's is what was formerly Radio Recorders.

All songs on the Double Features release have left and right channels reversed.

The record version of 'Who Needs Money?' is a composite of instrumental track, Ray Walker's vocal overdub, Elvis' vocal overdub, 'cue' vocal overdub and 'insert' vocal overdub.

In the 'In & Outtakes' section of the booklet with FTD's Clambake extended soundtrack, it's indicated that Ray Walker and Elvis' vocal overdubs were done separately for 'Who Needs Money?', along with a 'cue' vocal overdub and an 'insert' vocal overdub. My guess is that the 'cue' vocal overdub of 'Who Needs Money?' is the part that is on the record version but not the movie version (1:36 - 2:01 of record version), and the 'insert' vocal overdub (done on March 6) is Elvis' re-recorded 'ending'.

The movie version of 'Confidence' had children singing along, probably recorded on the movie set.

The record version of 'Confidence' had a re-recorded first verse (probably recorded sometime between August 17 and September 11), and also had female vocals overdubbed on September 19.

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.