This will be a relatively brief post compared to the ground we covered for the church dedication. For an altar’s rite, there is an entrance procession (31) largely as at a usual Mass, or exactly as in the dedication of a church already in use (III, 3) or the simple form for a church dedication (II, 43). If relics are part of the rite (32), then it’s also as before (III, 4) and (II, 44).
Section 33 identifies Psalm 43 for entrance with one of two antiphons:
O God, our shield, look with favor on the face of your anointed; one day within your courts is better than a thousand elsewhere (alleluia).
I will go to the altar of God, the God of my joy.
That first antiphon is derived from the 84th. Personally, I think there might be a few better choices than Psalm 43. Either antiphon with Psalm 122 (as long as we’re mixing and matching verses with whole psalms) would work okay for me. And naturally, the option is there for “another appropriate song.”
After the greeting (34), there is a sprinkling rite (35) including the altar (36-37), the Gloria (38), and the opening prayer (39).