The video below is of the Cistercian monks at Senanque Abbey singing Gregorian chant.
The album below includes a wonderful collection of singers who offer up devotional songs, most written for pilgrimage. Featured are Catherine Braslavksy, Celtic singer Niorin Ni Riain and Anonymous 4.
Below is Anonymous 4's recording of the music at Las Huelgas Monastery, the monastery in Spain founded by Eleanor of Aquitaine's daughter, Eleanor of England in 1187 and which became a refuge for Troubadours fleeing the Albigensian Crusade in the next generation. The monastery was notable for the extraordinary powers of the abbess. Subject to no bishop or cardinal (indeed only to the Pope himself); She was allowed to hold almost unprecedented secular and spiritual authority for a woman- some say, the equivalent of a bishop. She herself was even allowed to hear confessions and give dispensation! The music from the monastery is similarly forward- thinking: we have examples of some of the earliest polyphony in Europe within the Codex Las Huelgas. Our own cherished Ruth Cunningham is a founding member of Anonymous 4.