There's a certain urgency that comes from the records of the early 60s before overdubbing and multitracking came into play.
“Classical musicians do this all the time. They want perfection. So they piece things together. Eight bars of this and six bars of that. Glenn Gould said that with a recording he wanted to make perfect versions of pieces.”
“The actors nowadays, both young men and young ladies, don't always wear their period clothes as well as they might. They tend to stomp around a bit in them.”