Early Faint "Phantom" Turntable/Vinyl Signal???

I think it’s tape bleed. ??

Print-through from the original tape to the next layer and/or signal modulation from neighboring grooves. It’s also known as pre and post echo.

Its called pre-echo. Record grooves are originally cut into a very soft special wax. This wax is so soft it deforms easily. Sometimes if the grooves are not spaced widely enough apart the squiggles from the music being cut deforms the wax enough to create a very weak copy of itself in the preceding groove. If you watch a record when you hear the pre-echo you will notice when it comes around one full turn that's when you hear the original sound. 

Once you know what it is you will notice it happens quite a lot. Sometimes like Harry Belafonte at Carnegie Hall its almost like he sings "Sylvie" twice each time. Part of the charm of vinyl.

Appearing from the ether comes an explanation:

"I think what your are hearing is print through either from the original tape recordings or from the records themselves. It is like one revolution of the record difference between the faint and the full level? Sometimes it is one revolution of the reel of tape used to make the record. This phenomenon is actually on the record."

Actually Keith Herron supplied the explanation.

It gives vinyl its euphony.