The "redundancy" of the term or phrase 'Errata Erratum', the first word just being the singular form of the second one, seems to me a very clever and ingeniuos play on words to illustrate the very idea of music looping. I choreographer once told me that in order to tell a story right you must repeat it over and over...
I find this passage fascinating:
"By not altering its pitch or timbre, one keeps the original emotional power that speech has while intensifying its melody and meaning through repetition and rhythm"
Steven Reich
