Sound right before song begins on vinyl, what is it?

It is interesting. Thanks.

@drbond 

Thanks for an interesting read. Seems that there can be a couple of reasons. I "think" most of what I hear is the tape bleed through type but who knows. I'll have to pay attention to when I hear it and try to observe what might be the cause. No reason other than curiosity. I had considered that it may go on through an entire album or entire song but it is lost as the "intended" music takes over. Kind of like overcoming a tape hiss, tube hiss or minor surface noise (noise floor, I guess). It's never been a bother, just a matter of curiosity. Thanks.

I'm going to have to pay more attention the next time I hear this phenomenon to measure the duration etc. It makes the most sense to me to think that this is a tape related problem. I have trouble understanding how the vinyl flaws could sound the way this does. I'm not saying anything is wrong, I'm just trying to wrap my head around it. Interesting stuff. Thanks all.

@tcutter 

It seems like the only explanation in that case is the vinyl flaw, which was explained by someone earlier. It is kind of hard to imagine that one sounding as an exact but faint replica of the song that is about to begin. Does it? I don't think I've ever heard it on a D2D but will pay close attention when I listen to one in the future. I have quite a few and they are among my favorites to demo something new in the system.

Under the tongue, apparently.