The essence of the music was found in the Hammond, not the guitar/bass; it created an unusual timbre for the song, making it more like soft-core Vanilla Fudge or ELP than the other music of its day. As one drawn to the organ for the last 50 years or so, that grabs me deep in the soul.
I was impressed that even the drummer could “fake it real” as a convincing musician even though the session was probably lip-synched.