Killingbeans
Major Contributor
So when I would put on Dark side of the moon (The import Harvest CD, great!) or Rumours (the german mastered one) or some Bach CDs that were well recorded I knew EXACTLY what every second sounded like and the imaging and soundstage were like muscle memory as I had listened to them so many times sitting in exactly the same spot in exactly the same room with the same equipment.
Ironically echoic memory works practically opposite to that. More than 3-4 seconds (on a good day) between the impressions you're comparing, and you're screwed.