Reversed Polarity LP Cuts - Examples?


I recently bought a custom made phono stage equipped with a three-position polarity switch on the front panel with the positions "+", "mute", "-" and, so far, have not had occassion to use the "-" function. I found an old UK pressing of the Stones "Sticky Fingers" at a garage sale Saturday and, after a thorough cleaning, found that a few tracks sounded a bit "flat", for lack of a better term. Recalled the polarity switch and snapped it to "-". Huge improvement.

I have heard vague mention of LP's or tracks of LP's being recorded "in reverse" before but am wondering how commonly this is found. Can anyone give specific examples of what they've discovered (not including intentional phase shifting done for particular efffect, such as used by the Beatles and others). Thanks.
4yanx
Cmk - If your contention that 1/2 of LP's are pressed with 'reversed phase' were true, and if reversing your system's polarity 'fixed' something like 'weaker bass' supposedly caused by this, then your phono with the inverted polarity woud cause the other 1/2 of LP's - the ones pressed 'in phase' - to display the same alleged symptoms. If you're not prepared to experiment finding the 'best' polarity for each recording, then by your reckoning at least half will be played back 'wrong', whether you arrange your system to be always polarity-correct or always polarity-inverting. Yet, you say you "haven't had any problems." Think about the implications...
Yanx the phase phenomenon is not just exclusive to phono - compacted disc exhibits the same issues. I've found that the phase invert button on my full function preamp sometimes improves certain cuts on an (LP or CD) by enhancing one or more of the following:
Dynamics. Bass extension & control. HF articulation. HF harshness. Vocal naturalness. Weak-ish 'washed out' sounding cuts.
That phase buton works almost like a tone control sometimes.
Note that not *all* cuts on the same LP or CD will benefit from phase inversion; some do while others don't. As Zaiks says, it's a simple matter of experimentation. Those cuts that do not benefit from inverted phase will typically, but not always, run much better when non-inveted. The 'correct' phase is typically easily determined by a brief listening sample & a few button-presses to compare subjectively.
Zaikesman, I dunno about you, but not everyone can hear the difference when the phase of a recording is reversed, at least I couldn't. There was a test CD on Chesky, can't remember which one, that had David Chesky doing some recording in and out of phase. Frankly, I hardly heard a difference. Of course YMMV.
Cmk, I agree with you on that statement (obviously many folks such as Bob may take some exception), even if it seems to somewhat contradict your previous post. What it really means is that what you're hearing would likely seem largely the same to you even if your phonostage did not invert polarity. But I agree with Bob's implication that if you're not going to futz around with polarity as standard operating procedure (as I do not), then it's still probably best to just make sure your system is polarity-correct before putting the issue out of your mind. My DAC has long had a polarity-invert button, but I never end up using it. My latest preamp is the first one I've had with remote polarity control...maybe I'll start trying to experiment with this aspect more in the future and see if I get anything out of it worth the bother, at least with certain types of music and recordings.
Zaikesman, yes, one shd always get the polarity right. I too have a polarity button on my DAC, but never used it, except by accident. Which DAC do you use?