I gotta go with the cover of a 1973 failed song from The Boss, Bruce Springsteen, done up in an "early onset" Rap Style.
Manfred Mann's Earth Band compiled a redo of "Blinded by the Light" in 1976, and it Took Off!
To me personally, MMEB's version has to be the very first or earliest appearance of the Rap genre.
L.Pol Hill
