"Pie Jesu" (/ˈpiː.eɪ ˈjeɪ.zuː, -suː/ PEE-ay-YAY-zu; original Latin: "Pie Iesu" /ˈpi.e ˈje.su/) is a text from the final couplet of the hymn "Dies irae", and is often included in musical settings of the Requiem Mass as a motet. The phrase means "pious Jesus" in the vocative.