I've just found Attende Domine:

Hear us, O Lord, have mercy upon us: for we have sinned against thee.

To thee, Redeemer, on thy throne of glory:
lift we our weeping eyes in holy pleadings:
listen, O Jesu, to our supplications.

Hear us, O Lord, have mercy upon us: for we have sinned against thee.

O thou chief cornerstone, right hand of the Father:
way of salvation, gate of life celestial:
cleanse thou our sinful souls from all defilement.

Hear us, O Lord, have mercy upon us: for we have sinned against thee.

God, we implore thee, in thy glory seated:
bow down and hearken to thy weeping children:
pity and pardon all our grievous trespasses.

Hear us, O Lord, have mercy upon us: for we have sinned against thee.

Sins oft committed, now we lay before thee:
with true contrition, now no more we veil them:
grant us, Redeemer, loving absolution.

Hear us, O Lord, have mercy upon us: for we have sinned against thee.

Innocent captive, taken unresisting:
falsely accused, and for us sinners sentenced,
save us, we pray thee, Jesu, our Redeemer.

Hear us, O Lord, have mercy upon us: for we have sinned against thee.

The English Hymnal is your friend here, though the problem there is that the texts are in English instead of American Catholic. As long as you don't have "thee" at the end of a line, rhyming with something, you can probably fix it.

What is the dealio, Noel?

Which hymns exactly?

For hymns from the Liturgy of the Hours, there are metric translations in the Mundelein Psalter.