<Tr> <Th> Sweden (Sverigetopplistan) </Th> <Td> </Td> </Tr> <Tr> <Th> Switzerland (Schweizer Hitparade) </Th> <Td> </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> </Td> </Tr>

Who sings once i was 7 years old