Quintus Horatius Flaccus
The First Book Of The Odes Of Horace (Chap. 21)
Ode XXI

On Diana And Apollo

Ye tender virgins, sing Diana; ye boys, sing Apollo with his unshorn hair, and Latona passionately beloved by the supreme Jupiter. Ye (virgins), praise her that rejoices in the rivers, and the thick groves, which project either from the cold Algidus, or the gloomy woods of Erymanthus, or the green Cragus. Ye boys, extol with equal praises Apollo's Delos, and his shoulder adorned with a quiver, and with his brother Mercury's lyre. He, moved by your intercession, shall drive away calamitous war, and miserable famine, and the plague from the Roman people and their sovereign Caesar, to the Persians and the Britons.