The polyphonic vocal custom from the Mediterranean isle of Sardinia, Italy, become more active through the shows of Tenore and Concordu de Orosei. Although just two users, Martino Cormibi and Patrizio Mura, stay from the initial group created in 1978, their dedication with their musical heritage continues to be solid. The group became a member of with Dutch cellist Ernst Reijseger to record an recording of improvised vocals and cello, Colla Voche, released in 1999.