Hmm, lots of organ (thinking of "Runaway", "Hello Stranger", etc.) and Wurli's (think Ray Charles - especially "What I Say". Then later, the B-3 reigned supreme while the people who couldn't afford one or didn't want to move one played Vox Continental or Farfisa organs.
But technology was different. There were more saxophones in the early days, guitars didn't have effects (except for the intentionally blown speakers the blues guys used for fuzz), and there were fewer electric keyboards to choose from.
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