A Filetta

A Filetta (Corsican pronunciation: [a fiˈletta], lit. 'The Fern') is an all-male singing group that performs traditional music from Corsica. It's made up of Corsican singers who try to popularize the traditional Corsican Polyphony singing style. To assert its Corsican identity, the group's name refers to a kind of fern that grows on the island.