Scheme I: Meditation on the Joyful Mysteries
Scheme II: Meditation on the Luminous Mysteries
Scheme III: Meditation on the Sorrowful Mysteries
Scheme IV: Meditation on the Glorious Mysteries
Scheme V: Chaplet of Divine Mercy
"Our Lady of the Holy Rosary" is a five-album set, conceptualized around the practice of praying the Rosary. Depending on which day the Rosary is said, there are different sets of "Mysteries" upon which to reflect: the Joyful, Luminous, Sorrowful, and Glorious Mysteries, respectively.
The Mysteries themselves, are events in the lives of the Blessed Virgin Mary and the Lord Jesus Christ, which are primarily recorded in the Gospels, or otherwise extended from sacred tradition of the Catholic Church.
The Chaplet of Divine Mercy, however, is not necessarily connected to the practice of praying the Rosary as it involves a different set of practices and prayers altogether. The "Divine Mercy" arises from St. Faustina, who recorded in her diary accounts of visions and visitations she encountered with the Lord Jesus in the early 1900's.