This ensemble is a duo (or trio or quartet) that specializes in Italian American mandolin music from the early 1900s. The combination of two mandolins and guitar was very popular in those days to play for small social gatherings (weddings, first communion parties ...) and a lot of music was published for it. Often the ensemble consisted of a mandolin teacher with one or two of his best students.

I've collected this type of music for many years, from whatever sources I could find it.