K.M. Richards
Program Director, The Eighties Channel™
The simple manual solution was to start random select reels at 5 AM by skipping a certain number of cuts so that there were different start points and, thus, different combinations of songs. I used a very simple table where each deck had a different "new reel start" for every day of the month so that you never heard the same start points of same combinations of songs together for about a year (start points times the number of reels in the category).
I used to do the same thing at an automated AC that I was responsible for, with the recurrent and gold reels, and we would rewind to the beginning when we came to the end. I also had specific times for reel changes which changed daily and were spaced so that only about 75% of the songs played on any given reel during its "shift".
Currents were only two reels, so we had a mandatory change at 2:00am, alternating which reel we started with and at a different cut number each morning. Then we just swapped reels when they got to the end.
I know that I got comments even on different versions of the same songs being repeated around the same time during the span of a few days. This was, in those 60's and 70's years, more of a foreground format than most people think today.
I can see that, given my earlier comments about many early BM stations evolving from "good music".