Although they make plastic ocarinas of a high quality. solist also make clay ocarinas of an equally high quality. Solist were the first to bring out the Solist Plus. This an ocarina, where the chamber is made out of plastic, to be durable. but the fipple and mouthpeice are made out of clay. these two factors work well together, to create both durability and crisp tone! It is rumored that solist plastic ocarinas are a clone of noble ocarinas, as both are similar in shape, size and tone.