Thirty-one motets first published in printed anthologies or copied into manuscripts between 1570 and 1579 appear in this volume. Le Roy and Ballard working in Paris included over half of them in their collections of Lasso's motets and chansons; the others appear in choirbooks from the Bavarian Hofkapelle and in the 1579 expanded reissue in Nuremberg of Gerlach's Selectissimae cantiones.

The proportion of secular texts in this volume is less than in CM 17; most of them are ceremonial or love p...