The idea is that a second set of ears didn’t hear it either and she is a bit more than half my age (40s maybe). But she is here several times a week and when we listened to the YT version, we both heard the very low noises toward the beginning and these are barely audible. She pointed it out and asked if that’s to what I was referring. Again, we were listening for a distinctive "squeak" like you would hear from a spring mechanism that needs to be lubricated.
She is a big jazz and music fan (I always hear her car stereo playing when she pulls up) and loves the sound of my stereo. Her favorite in my collection is Vince Guaraldi doing the Peanuts themes. When I talk of classic rock bands, she knows who I’m talking about and is familiar with the songs.
She lives in a studio with her daughter and could never afford even a modest system let alone have a place to set it up. Her occupation has nothing to do with it.