Sāmaggī: Concord
Concord is the harmony of people practicing side by side. Trumpeters and singers keep separate crafts and separate training, yet they come in on the same beat, nobody racing ahead and nobody hanging back, like a crew rowing in time. With the ark just carried into the inner room, that agreement is the first offering the house receives.
Ekaggatā: One-pointedness
One-pointedness is the mind collected on a single object. A hundred instruments are going, and the aim is one sound, the way many streams run into one river. Praise scattered across a hundred private moods stays noise; brought to a single point it becomes something a room can hold. Attention gathers by the same method, and the gathering always comes before the filling.
Anussati: Recollection
Recollection is calling to mind the qualities of what one trusts. The song carries one line, that he is good and his kindness lasts, repeated the way a crowd sings a hymn it already knows by heart. Saying a remembered goodness aloud steadies the person saying it, so the singing works on the singers before it works on the house.
Mettā: Loving kindness
Loving kindness is goodwill held without limit. The line they keep returning to praises endurance over intensity: kindness that outlasts everything, a well that has not run dry through all the years the ark spent in a tent. Goodwill of this kind is measured by how far it reaches and how long it holds, and the singers are naming the very thing they are learning to do.
Pīti: Rapture
Rapture is gladness that floods body and mind. The cloud arrives as a filling, taking the whole house at once the way warmth takes a room, entering everywhere rather than moving in from a doorway. It also stops the work, since the priests can no longer stand to minister, and rapture likewise shows up once the effort that prepared the ground has been set down.