Frogman's comment
on pitch stability is a crucial point,ask any musician or singer with perfect pitch and they will tell you exact pitch is the foundation or heart of music.
Frogman your comment on turntables ,I agree
with analog play back a good direct drive over comes stylus drag more so then most, but not all belt / thread drives , yet another problem with analog play back components.
Early digital was horrible however digital pitch stability was a decisive factor even though to me play back is cold and uninviting even today.
One of many problems with analog play back is off centre spindle hole in the record, pitch is enormously effected especially stands out with piano where us that don't have perfect pitch readily pick up on it right away.
To hear that favorite vintage Lp with a off centered spindle hole centered corrected by a Nakamichi TX-1000 turntable is a real eye opener, thank you once again Gary if you read this.
Now if someone could re-engineer that 1980s product ,Centre-A-Disk I would have the patience to use it.