Back in the days of Analog 2″ 24 track tape, engineers kept track of what was recorded (and when) on a piece of paper known as the “Track Sheet”. It was a roadmap for the next engineer who had to work on the project and it offered a look into the tracking techniques ( and track allocation) of the engineer.
Several artists have actually included these in their album artwork (The Rolling Stones “Black and Blue”, Todd Rundgren “Something/Anything”).
If the engineer was only working off 24 tracks (there was a way to “slave” another 24 track machine…very cumbersome and a cottage industry at the time), decisions had to be made as the song was tracked. You can see from the “Born In The U.S.A.” track sheet that,aside from the kick,snare and room tracks, the whole kit (all toms and hi hat) were sub mixed down to a stereo pair. It’s also interesting that certain outboard effects (the AMS kick and snare) were actually printed to the tape. These were probably samples, using the AMS unit’s ability to capture samples and have them be triggered by the kick and snare. Only one sample could be triggered at a time and once the unit was turned off, the sample was gone.
I’m guessing that most of the track was recorded at the same time,live in the studio. It’s funny that this massive sounding track was put together with a relatively small number of interments. As usual, it’s mainly about the song,the arrangement..and the performance. (Also kudos to engineers Toby Scott and Bob Clearmountain, two of the best).