I have a new entry that has works where the artist is unknown but on the disc the work is listed by the manuscript it is found in, e.g. Apt Manuscript (https://en.wikipedia.org/wiki/Apt,_Vaucluse) and the Cyprus manuscript (http://www.classicalarchives.com/composer/6563.html). Should these be treated as “[unknown]” or “[anonymous]” with the “listed as” being “Cyprus manuscript”, or should they be set up as composer?
JR