Penitential Psalms 
plural noun
Seven psalms (6, 32, 38, 51, 102, 130, 143) which express penitence.The bishop commenced by reciting the seven Penitential Psalms and chanting the Litany of the Saints at the main entrance....
- These Hours were placed between extracts from the Gospels, various prayers and daily devotions, the Penitential Psalms, the Litany of Saints, and masses for certain holy days.
- However, it was also about this time that the gloominess and intensity of Counter-Reformation ideas began to affect his music, most especially in his settings of the seven Penitential Psalms.