So I am sitting here quietly working on a bibliography for Peter Damian's works - the Letters are in Verbum, the Sermons are in Migne & Neale, the hymns are ... well they are spread through Wikisource, Hymnary, etc. but I can find them nowhere in Verbum ... not even John Mason Neale's translations.
It is important to have the hymns of major saints, doctors of the church, et. al. available and findable in Verbum - by findable I mean either with labels or on Faithlife Music. Even just using the Wikisource resources, one could get an inexpensive start at this.
For anyone curious, my current "finds" for hymns by Peter Damian:
Hymns (at least 11 in Latin)
Ad perennis vitae fontem
Christe sanctorum gloria
Marian Hymns
O Quam dira, quam horrenda
Paschalis festi gaudium