<Tr> <Th> Date </Th> <Th> Tour </Th> </Tr> <Tr> <Td> 1973--1975 </Td> <Td> Australian Clubs Tour </Td> </Tr> <Tr> <Td> 1975 </Td> <Td> High Voltage Australian Clubs Tour </Td> </Tr> <Tr> <Td> 1975--1976 </Td> <Td> TNT / Lock Up Your Daughters Summer Vacation Tour </Td> </Tr>

Is the lead singer for ac dc still alive