I think anyone listening to Pet Sounds/Sgt Peppers/Odessey should give the Left Banke a listen. The classic Walk Away Renee (yep, the hit by the Four Tops wasn't theirs originally!) and the outstanding Pretty Ballerina will really blow you away. Baroque rock at its best, and the majority of these classics written by the 17 yr old Michael Brown (as was his age at the time)....!
I think for me every one of the three albums are UNIQUE, ORIGINAL and VANGUARDIST; all those groups were incredible and made wonderful changes in music making conceptual ideas and giving us excellent composers (Lennon & McCartney, Brian Wilson and Argent & White); without them, the music will not be the same!!!