Agreed. The latest remaster of Let It Be ALMOST sounds like it could have been recorded today. Conversely, I think a lot Adele's ALMOST sounds like it could be from the 70's
Listen to "One After 909" from Anthology (or the 1963 'bootleg' release).
Then listen to the version from Let It Be.
"Production" such as it is is, I'd think, 'minimal' in most senses - there's some mics in front of singers and amps. One was outside, one inside. But the sound is different. The performance is definitely different in 1969 - so much looser, relaxed, and more accomplished. In some ways it's hard to think it's the exact same band a mere 6 years apart (yes, excepting Billy Preston added keys in 1969).
I'd always wished they'd have re-visited a few more of those early ones (originals or covers), just to get that sense of development, progress and transformation in such a short time. It's interesting that we ended up getting at least one song captured so 'far apart' from itself.
Back then they were looking for any new technology that would help make clean recordings.
Nowadays audio professionals are looking for any new technology that will help imprint the analog artifacts of these years on the clean digital recordings.
