Qui habitat
Qui habitat (Latin for 'He who dwells') is a liturgical chant sung as the tract during the Mass of the First Sunday of Lent or Quadragesima Sunday in the Roman Rite of the Catholic Church. This tract, drawn from Psalm 90 (91 in the Hebrew numbering), is a significant example of Gregorian chant and "one of the most remarquable tracts" of the Graduale Romanum. It reflects the penitential character of the Lenten season. It replaces the Alleluia, which is omitted during Lent, and serves as a meditative interlude between the Gradual and the Gospel reading.