Occuli omnium - Gradual (Modo VII)

Whose song is Occuli omnium - Gradual (Modo VII)?

Artist Album
Benedictine Monks of Santo Domingo de Silos
Chant
Coro de Monjes del Monasterio Benedictino de Santo Domingo de Si
Canto Gregoriano
The Benedictine Monks of Santo Domingo de Silos
Chant
The Benedictine Monks of Santo Domingo de Silos (Dir. Ismael ...
Chant