A song to the Holy Angels from Saint Hildegard von Bingen

De Angelis: Hildegard von Bingen

In place of the Apostle's Creed in the beginning is the longer Nicene Creed. The Rosary doesn't officially start until the Pater Noster of the first Glorious Mystery.

From: https://www.youtube.com/watch?v=Muo1NNKUK80

There are precisely 15 mysteries of the actual Rosary, and there will always be precisely 15 mysteries of the actual Rosary, no matter what anyone--especially an antipope--says to the contrary. Related, see: 

The Twenty Mysteries of the Rosary?
https://www.seattlecatholic.com/article_20021108_The_Twenty_Mysteries_of_the_Rosary.html

The Rosary -- All 15 Mysteries -- Gregorian Chant

Gregorian Chants And Monastery Prayer For Spiritual Renewal - Catholic Monastery Prayer (320 Kbps)

This track is from the album Chant: World's Top Gregorian Chants for Meditation, Relaxation, Healing, And Quiet Time and is available on Spotify:
https://open.spotify.com/album/2UdVnnvhUuSsQU1hcqpaKl

Gregorian Chants of the Monks

Alcuni tra i più celebri canti gregoriani accompagnati dall'orchestra sinfonica. Un repertorio intramontabile in una versione ricca di fascino, sonorità e suggestioni.

Pange lingua, di T. D'Aquino

Illumination - Peaceful Gregorian Chants - Dan Gibsons Solitude [Full Album]

This was transferred from Vinyl and recorded in 1980.

One Hour Of Beautiful Gregorian Chant

(Lc. 1, 28.42)  Ave Maria gratia plena dominus tecum * benedicta tu in mulieribus et benedictus fructus ventris tui. 
(cf. Lc. 1, 34-35)  V. Quomodo in me fiet hoc que virum non cognosco 
                                    Spiritus domini superveniet in te et virtus altissimi obumbrabit tibi. 
                               V. Ideoque quod nascetur ex te sanctum vocabitur filius dei.*
                                   

The Rosary -- All 15 Mysteries -- Gregorian Chant

Jeremiah Alphonsus