<Li> "How Long" (Ace song), 1974 </Li> <Li> "How Long" (Charlie Puth song), 2017 </Li> <Table> <Tr> <Td> </Td> <Td> This disambiguation page lists articles associated with the title How Long Has This Been Going On . If an internal link led you here, you may wish to change the link to point directly to the intended article . </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This disambiguation page lists articles associated with the title How Long Has This Been Going On . If an internal link led you here, you may wish to change the link to point directly to the intended article . </Td> </Tr>

Who sings how long has this been going on