As for 3DN, the original lineup backup band is what to pay attention to.
Every song was actually an intricate arrangement of parts and interplay between the instruments reminiscent of the kind of thing the Funk Brothers were doing up at Motown Detroit in that era, but with a decidedly "white" or "rock" twist. Righ down to use of the tamborine as a definite part of some of the arrangements.
Recordists should take more than a little bit of notice to these great old pop cuts. One of he few bands that did not need to resort to session players when they went into the studio.
The singers were great, but without the "frame" of that band, there would have not been the entire "picture" that worked so well.
Extra Credit for anyone who can identify the brand and type of electric piano featured by this band...
--Mac
_________________________
"Keep listening. Never become so self-important that you can't listen to other players. Live cleanly....Do right....You can improve as a player by improving as a person. It's a duty we owe to ourselves." --John Coltrane
"You don't know what you like, you like what you know. In order to know what you like, you have to know everything." --Branford Marsalis