3 December – Saint Francis Xavier
7 December – Saint Ambrose
To Saint Ambrose is attributed the hymn Veni redemptor genium (the words in Latin, scroll down for a list of all the versions in English; the German hymn; chant – contemporary beat – from Advent at Ephesus).
10 December – Translation of the Holy House of Loreto
12 December – Our Lady of Guadalupe
An entire album of traditional songs for Our Lady of Guadalupe.
16 December – Saints Ananias, Azarias, and Misael
25 December – Blessed Jacopone da Todi
26 December – Saint Stephen
29 December – Saint David
A psalm set to music
6 January – The Epiphany
As with Gladness, Men of Old & We Three Kings (easily found through any streaming service).
The Tradition of Epiphany Singers (including a list of special Star Singer songs in German). Here is a Youtube channel of Sternsinger, the children’s aid organization of the Catholic Church in Germany. Since it takes its name from the custom, it shares many videos of Epiphany songs and other short explanatory videos.
20 January – Saint Sebastian
23 January – Blessed Henry Suso
4 February – Blessed Rabanus Maurus
25 March – The Annunciation
27 March – Saint John Damascene
John of Damascus (“A Russian Requiem”) by Sergei Taneyev.
6 April – Saint Juliana of Liège
6 April – Blessed Notker the Stammerer
28 April – Saints Theodora and Didymus
11 May – Saint Francis de Geronimo
21 May – Saint Godric
9 June – Saint Columba
Hymn of Saint Columba by Benjamin Britten (Anglican).
27 June – Saint Ladislaus
7 July – Saints Cyril and Methodius
Hymn to Cyril and Methodius by Tchaikovsky.
17 July – Saint Alexius of Rome
“Sant’Alessio”, an oratorio by Camilla de Rossi
2 August – Saint Alphonsus Liguori
30 August – Blessed Giovanni Giovenale Ancina
Laudate dio (words in Italian)
17 September – Saint Hildegard of Bingen
24 September – Blessed Hermann Contractus of Reichenau
Salve Regina, Alma Redemptoris Mater, and Veni Sancte Spiritus are traditionally attributed to Blessed Hermann of Reichenau.
28 September – Saint Wencelsas
29 September – Saint Michael the Archangel
4 October – Saint Francis of Assisi
8 October – Saint Demetrius of Thessaloniki
9 October – Saint Abraham
19 October – Saint Jean de Brébeuf
21 October – Saint Ursula and Her Companions
Hildegard von Bingen, 11,000 Virgins
19 November – Saint Elizabeth of Hungary
22 November – Saint Cecilia
Charpentier, Oratorio «Caecilia virgo et martyr» H.397
Alessandro Scarlatti, Il Martirio di Santa Cecilia
Purcell, Hail! Bright Cecilia