Antonio Vivaldi: Concerto for two cellos, in G minor RV 531.
Only a small part of Vivaldi’s work was published during his lifetime and can therefore be dated. These publications were made between 1705 and 1729 and have been assigned opus numbers from 1 to 12. The rest have RV numbers from 1 to 813. I have tagged this concerto with 1730s, it may have been written earlier, but since Vivaldi died 1741, probably not later.