I put an epsiode of "In Our Time" into Live's sampler so I could play the whole thing by pressing any key. The higher the key, the higher the pitch. (You know, sampling. Like all the young people do.) Then had Live play a somewhat random series of patterns while I varied where in the 45-minute interview each note started to play:
If you think of the Y-dimension of the second row as the length of the interview with the beginning at the bottom and the end at the top, every note plays a snippet of the interview starting from where the black "timekeeping" line intersects the pink line. A perfectly flat pink line would signal a series of notes that all start within a very narrow band of the whole interview.
I'm moving the pink line around by moving the right end of the line. The left starting point is stable which is why the sound always seems to loop back toward that particular word which is the topic of the show and interesting input for a semi-random, sort of looping process.