At 130 measures, the Recordare ("Remember") is the work's longest movement, as well as the first in triple meter (); the movement is a setting of no fewer than seven stanzas of the Dies irae. The form of this piece is somewhat similar to sonata form, with an exposition around two themes ( 1–37), a development of two themes (mm. 38–92) and a recapitulation (mm. 93–98).
