Some of the genre's most historically significant performances did not surface on record until the new millennium. Many historical, live jazz performances have graced the past and thankfully were caught on recording; being released shortly after. For example, Art Blakey Quintet's A Night at Birdland, which is regarded as one of the best live jazz shows ever recorded. The performance is from the winter of 1954, and it was soon released on record that coming fall. That seemed to be the average turnaround time for a live jazz record in those transformative years. Certain live recordings, however, were left to linger on the vine for some other time. Was this intentional? Were they just forgotten about? Was it divine intervention? Did certain recordings need excessive time to cool off, because they were just so hot? These are all important questions to ask.