Domine, non secundum is the Tract for Ash Wednesday (and is also listed as being used at Ember Friday in that week).
The Brazilian Benedictines have recorded the plainchant of the tract, but I couldn't find it anywhere else. Here's their mp3, and here are the words in Latin, with translation to English from CPDL:
Below is the full chant score.
Here's a lovely setting of this text from Spain's Juan de Anchieta:
And here, the Warsaw Boys Choir sings Cesar Franck's setting:
Here are all the propers for Ash Wednesday, from the Sao Paulo Benedictines:
Here are posts on this site about the propers on the day:
The Brazilian Benedictines have recorded the plainchant of the tract, but I couldn't find it anywhere else. Here's their mp3, and here are the words in Latin, with translation to English from CPDL:
Domine, non secundum peccata nostra, quæ fecimus nos: neque secundum iniquitates nostras retribuas nobis.
Domine, ne memineris iniquitatum patrum nostrorum, cito anticipent nos misericordiæ tuæ, quia pauperes facti sumus nimis.
Adiuvanos, Deus salutaris nostri, propter gloriam nominis tui et liberanos; et propitius esto peccatis nostris propter nomen tuum.
Lord, do not repay us according to our sins or our iniquities.
Lord, do not hold our old sins against us;
may your mercy come quickly to meet us, for we are in desperate need.
Help us, O God our Savior, for the glory of your name;
Lord, deliver us and forgive our sins for your name's sake.
Below is the full chant score.
Here's a lovely setting of this text from Spain's Juan de Anchieta:
And here, the Warsaw Boys Choir sings Cesar Franck's setting:
Here are all the propers for Ash Wednesday, from the Sao Paulo Benedictines:
Tempus quadragesimæ Ad ritus initiales et liturgiam verbi
Feria quarta cinerum
Introitus: Sap. 11, 24-25.27; Ps. 56 Misereris omnium (3m44.9s - 3516 kb) score
Graduale: Ps. 56, 2. V. 4 Miserere mei, Deus (3m15.9s - 3064 kb) score
Tractus: Ps. 102, 10 et 78, 8 et 9 Domine, non secundum peccata nostra (3m27.7s - 3248 kb) score
Ad benedictionem et impositionem cinerum
Antiphona: Cf. Ioel 2, 13 Immutemur habitu (1m21.5s - 1276 kb) score
Responsorium: Cf. Bar. 3,2. V. Ps. 78,9 Emendemus in melius (2m24.7s - 2264 kb) score
Ad liturgiam eucharisticam
Offertorium: Ps. 29, 2.3 Exaltabo te (1m37.7s - 1528 kb) score
Communio: Ps. 1, 2b.3b Qui meditabitur (45.3s - 710 kb) score
Here are posts on this site about the propers on the day:
The Ash Wednesday Introit: Misereris omnium
Ash Wednesday: Miserere Mei Deus (The Gradual)
Ash Wednesday: Domine, non secundum (The Tract)
Ash Wednesday: Immutemur habitu and Emendemus in melius (antiphons sung during the imposition of ashes)
Exaltabo Te, Domine (The Offertory)
The Ash Wednesday Communion Song: Qui meditabitur