Scores of Morales’s masses in modern notation, in free to download PDFs.
For a modern edition of the four-voice chanson “Mille regretz,” see Nancho Álvarez, “Mille regretz.”
For a modern edition of the six-voice chanson “Mille regretz,” see Eric Haas, “Mille regretz.” IMSLP: Petrucci Music Library. Last modified April 16, 2012.