Mike, I have heard what you describe called "listener fatigue." The insidious, sometimes just-below-awareness, nagging effect on the brain waves, from sound that isn't clean enough. When you want to hear a song over and over to learn it but... the recording quality makes you nuts and you aren;t even necessarily sure why.

I have a Carter Fam piece stuck in my head now that way with all the pops from the 78 woven in. Hope I don't play it that way!

*G*

Or worse, SING it that way!

~Susan