The answer is it then remain preserved over the centuries. Since a layer of the volcanic ash preserve the art and architecture to the residents, the city of Pompeii then provide a snapshot of the Roman art.Hope this would be of help.
The rhythm of the RECITATIVE is free, and the rhythm of the ARIA is more regular. The harmony of the aria is based on a chromatic GROUND BASS that descends by half step. The slow and melancholy TRIPLE meter expresses in the aria Dido's lamentation at Aeneas's departure.
