I think that the answer is coins.
Answer: rectative, aria, ground bass and triple.
Explanation:
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.
Artist.Jean-Antoine Houdon Artwork.Portrait sculpture
Artist.Giovanni Battista Artwork. Italian Classical archaeologist,
Do, do, re,mi, fa, sol, la, sol, fa, mi, re, re, mi, fa, sol, la, la, sol, fa, mi, mi, re
Hope that helped