Pableson my understanding is that out of the source tapes (alternative takes and the individual tracks etc.)the artist decides what is going on the album and this set is worked on (usually to an incredible extent)and stored as the master tapes.
Clearly the rest of the source material is usually kept as well.
The master is the definitive tape as it is the album as was released.The deinitive version if you like.
Now sometimes artists do release alternative takes and very often these appear on remasters as extra's.
Dylan's soundtrack to NDH has many alternative takes which sound completely different musically and lyrically.
Of course alternative takes very close to the released version will exist too.
I do believe it is very easy to make recordings sound quite different depending on what is done during the remastering process however the key point is that the same tape is used.
Nick Drake's Pink Moon is a very sparse album ( very few instruments) and yet it sounds very different from the original CD release because the mix has been changed.
These changes could easily be mistaken as alternative versions but they are not.
Now I shouldn't have called you daft and I apologise for that however I still think you are wrong.
I don't believe any of these Dylan albums have anything different on them from the original releases.
Indeed Dylan always used the studio in a hit and run fashion and seldom recorded any song the same twice over.
Your theory has merit anyone can easily see what some artists/producers might want to tweak things.However I believe this type of remastering is very rare.
It shouldn't be too difficult to give examples of this on the Dylan series.
Can you or others show obvious examples?
Indeed I cannot think of a single remastered album that uses the process you mention and not state it clearly in the notes or cover.
Clearly the rest of the source material is usually kept as well.
The master is the definitive tape as it is the album as was released.The deinitive version if you like.
Now sometimes artists do release alternative takes and very often these appear on remasters as extra's.
Dylan's soundtrack to NDH has many alternative takes which sound completely different musically and lyrically.
Of course alternative takes very close to the released version will exist too.
I do believe it is very easy to make recordings sound quite different depending on what is done during the remastering process however the key point is that the same tape is used.
Nick Drake's Pink Moon is a very sparse album ( very few instruments) and yet it sounds very different from the original CD release because the mix has been changed.
These changes could easily be mistaken as alternative versions but they are not.
Now I shouldn't have called you daft and I apologise for that however I still think you are wrong.
I don't believe any of these Dylan albums have anything different on them from the original releases.
Indeed Dylan always used the studio in a hit and run fashion and seldom recorded any song the same twice over.
Your theory has merit anyone can easily see what some artists/producers might want to tweak things.However I believe this type of remastering is very rare.
It shouldn't be too difficult to give examples of this on the Dylan series.
Can you or others show obvious examples?
Indeed I cannot think of a single remastered album that uses the process you mention and not state it clearly in the notes or cover.

