I responded to this statement in 27 which is the statement in full:
“Probably the biggest influence on the early Beatles.”
Nothing qualifying it as influence limited only to vocal harmonies.
Of course the Everys were the biggest influence on their vocal harmonies.
Biggest influence on just about any group that came after them in terms of vocal harmonies. Unless the Louvin Brothers who influenced the Everlys were in the mix.
OK, I stand corrected then. Saying “greatest” in regards to anything is always debatable, isn’t it.