The setting is the new temple dedicated to Apollo in Rome on 9October 28 BCE. Horace passes up the opportunity to make his poem one of praise to Augustus, who according to ancient sources vowed the temple during the civil wars, in favour of a very personal reflection on the things that matter to him, and a prayer for them to Apollo as the patron God of the arts. He prays for a long life, provided that it can be a healthy one, with his faculties unimpaired and, most importantly, retaining the ability to write his poetry.
The metre is Alcaics.
See the illustrated blog post here.
To listen, press play: