An interlude leads to the Allegro section, which the children's voices (ragazzi) begin singing Laudate sia, mio Signore, con tutte le tue creature (Be praised, my Lord, by all your creatures). The other voices, now in four parts, imitate in polyphony. The first creature, frate sole (Brother Sun), is mentioned first by the solo tenor. The movement ends with a reminiscence of the first melody in hymnic homophony.
