<Tr> <Th_colspan="2"> Media and performance </Th> </Tr> <Tr> <Th> Music awards </Th> <Td> <Ul> <Li> Arion Awards </Li> <Li> MAD Video Music Awards </Li> <Li> Pop Corn Music Awards </Li> </Ul> </Td> </Tr> <Ul> <Li> Arion Awards </Li> <Li> MAD Video Music Awards </Li> <Li> Pop Corn Music Awards </Li> </Ul> <Li> MAD Video Music Awards </Li>

Which of the following was not one of the three principal musical instruments of ancient greece