To understand the sound of Bette's version of "Boogie Woogie Bugle Boy," here's its history:
Version 1: mono 'retro' version from the otherwise stereo THE DIVINE MISS M.
Version 2: quadraphonic remix based on this version, but with different vocals and instrumentation in places and, obviously, a wider mix that actually diffuses the effect everyone was trying to get, which apparently was perfected with:
Version 3: the stereo (and mono DJ) single version, which is a different recording for the most part, and the keeper. It's the one that marries a more modern sound quality and mix with the retro feel of which Version 1 must have been an earlier attempt, and Version 2 a messy attempt at quad.
Versions 1 & 2 have a 'soft vocal' in many places, but the quad mix accents a few portions that are clearer, probably because the vocals were added later and not 'treated' or Eq'd the way most of the vocals on this version are, leaving the instruments in the quad mix to almost overwhelm those vocals (which doesn't happen with the single mix, which, unfortunately, the quad album didn't reference instead).
Otherwise, the quad Lp sticks to the basic template and style of the stereo version, opening it up nicely without many anomalies, that song excepted.
ED