Workers in this unit group make, repair and tune stringed, wind or percussion instruments with hand or power tools. Their functions include: making and repairing accordions, stringed and wind instruments; building and repairing organs and making parts of organs from wood, leather, metal and other materials; making instrumental parts of pianos from wood, felt, metal, wire and other materials and assembling and repairing pianos; tuning organs, pianos or other musical instruments; making and repairing other musical instruments; performing related tasks.