Qui habitat in adiutorio altissimi (The Lent 1 Tract)

Here are two videos of this Old Roman Chant version of the Lent 1 Tract, Qui habitat in adiutorio altissimi ("He who dwells in the shelter of the Most High"). The Tract replaces the Alleluia during Lent, and is always an unbroken section of a Psalm; on Lent 1, the Tract is the whole of Psalm (90/)91.

This Tract is so long that it requires two YouTube videos!  (Palm Sunday and Good Friday are the only other days assigned long tracts like this one.)   Psalm 91 is the basis for all of the chant propers for Lent 1; I believe that's unique for the Great Church Year.   The historical Lent 1 Gospel reading is Christ's temptation in the desert, during which Satan quotes this Psalm - so it's easy to see why Psalm 91 has the status it does on this day.

Below I've posted the Gregorian version of the chant; the music is not the same, but the words are all there.  The singers on the video are Ensemble Organum, directed by Marcel Peres.

Part I:




Part II:

Here's the Psalm itself, from the link above:

He who dwells in the shelter of the Most High
    will abide in the shadow of the Almighty.
² I will say to the Lord, “My refuge and my fortress,
    my God, in whom I trust.”

³ For he will deliver you from the snare of the fowler
    and from the deadly pestilence.
⁴ He will cover you with his pinions,
    and under his wings you will find refuge;
    his faithfulness is a shield and buckler.
⁵ You will not fear the terror of the night,
    nor the arrow that flies by day,
⁶ nor the pestilence that stalks in darkness,
    nor the destruction that wastes at noonday.

⁷ A thousand may fall at your side,
    ten thousand at your right hand,
    but it will not come near you.
⁸ You will only look with your eyes
    and see the recompense of the wicked.

⁹ Because you have made the Lord your dwelling place—
    the Most High, who is my refuge—
¹⁰ no evil shall be allowed to befall you,
    no plague come near your tent.

¹¹ For he will command his angels concerning you
    to guard you in all your ways.
¹² On their hands they will bear you up,
    lest you strike your foot against a stone.
¹³ You will tread on the lion and the adder;
    the young lion and the serpent you will trample underfoot.

¹⁴ “Because he holds fast to me in love, I will deliver him;
    I will protect him, because he knows my name.
¹⁵ When he calls to me, I will answer him;
    I will be with him in trouble;
    I will rescue him and honor him.
¹⁶ With long life I will satisfy him
    and show him my salvation.”

Here are the propers for for Lent I, from the Brazilian Benedictines:

Hebdomada prima quadragesimæ
Dominica Introitus: Ps. 90, 15.16 et 1 Invocabit me (cum Gloria Patri) (4m21.1s - 4083 kb) score
Graduale: Ps. 90, 11-12 Angelis suis (4m03.3s - 3805 kb) score
Tractus: Ps. 90, 1-7 et 11-16 Qui habitat (2m59.0s - 2801 kb) score
Offertorium: Ps. 90, 4-5 Scapulis suis (1m04.4s - 1011 kb) score
Communio: Ps. 90, 4-5 Scapulis suis (4m32.5s - 4261 kb) score

Here are posts on Chantblog about the propers for the First Sunday in Lent:

• The Introit for the First Sunday in Lent: Invocabit me
• Angelis suis: the Lent I gradual
• Qui Habitat: "The First Sunday of Lent: A Note on the Tract" (also see, for interest, Josquin des Prez: Qui habitat)  
• The Lent I Offertory: Scapulis suis 
• The Communio for the First Sunday in Lent: Scapulis suis