...the Offertory Verse for this Sunday in the Novus Ordo. In all likelihood, you won't hear it chanted. So here's Arvo Pärt's setting. It begins with the bass down in the depths...
De profundis clamavi ad Te, Domine; Domine, exaudi vocem meam. Fiant aures tuae intendentes in vocem deprecationis meae. Si iniquitates observaveris, Domine, Domine, quis sustinebit?
Out of the depths I have cried to Thee, O Lord; Lord, hear my voice. Let Thine ears consider well the voice of my complaint. If Thou, O Lord, wilt mark iniquities, who shall stand?
The schola won't be chanting this version. Alas. Just a simple one based on a Psalm Tone.