A pdf is available of the 1943 publication The Hymns of the Dominican Missal and Breviary by Aquinas Byrnes, O.P. Personally I’m not very musical yet this is really interesting especially with the notes with the hymns. Head over to Corpus Christi Watershed for more information and to download the pdf.
From the hymn for Lauds of Advent:
Hark to the voice whose thrilling tone
Bids shadows of the night begone!
Vain dreams of earth, and visions, fly!
Christ in His might shines forth on high.