The Carmen saeculare ("Song of the ages") is a Latin hymn written by Horace and commissioned by Augustus. It was sung by a choir of girls and boys at the secular games in 17 BC. It is written in Sapphic meter and follows the themes of the poets of the day, in particular Vergil.
The poem is a prayer dedicated to Diana and Apollo, and secondarily to Jupiter and Juno. It asks for their protection of Rome and its laws, as well as their favor in granting descendants to the Roman people. For Horace, prosperity and wealth returned to the city after Augustus took power and established peace. Making references to Aeneas and Romulus, he celebrates the reign of Augustus, which brought in a new era and ensured the future of Rome.
This poem marked Horace's return to lyrical poetry and raised him to the level of national poet.