Hymns in the form that Horace adopts here go back to earlier ages in Greece, an opening command to a chorus being a conventional feature. Octavian, the future Emperor Augustus, consecrated a new temple to Apollo in Rome in 28 BCE, and it is likely that this is what prompted the poem: cult statues of the three gods first mentioned were erected in the new temple, and it became associated with commemoration of the future Augustus’s victory over Mark Antony and Cleopatra at the battle of Actium in 31 BCE.
Woods were the haunt of Diana as the goddess of the hunt: Algidus is thought to have been a mountain in Italy, while Erymanthus and Gragus were in Greece and Asia Minor respectively. Tempe was a Greek valley associated with Apollo in myth. The bow and the lyre are conventional attributes of Apollo: “his brother’s” because the lyre was a gift from Mercury, its mythical inventor. The metre is third Asclepiad.
See the illustrated blog post here.
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