Anonymous 4 are an American female a cappella quartet, based in New York City. Their main performance genre is medieval music, although
they have also premiered works by recent composers such as John Tavener and Steve Reich.
Bruce C. Molsky (born 1955, New York City) is an American fiddler, banjo player, guitarist, and singer. He primarily performs old-time music of
the Appalachian region.
Courtesy of Wikipedia