Miserere
Miserere (Have mercy on me)
Description: A prayer for deliverance, this psalm is sung by the late-penitents (Psalm 50:3) Purg.5. A different line from the same psalm (Labia mea Domine [O Lord open my lips], Psalm 50:15) is later sung by the gluttons.
Genre: Gregorian chant
Source: Psalm 50 (51)
Copyright: public domain