<Tr> <Th> Chart (1949) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> U.S. Billboard </Td> <Td> 20 </Td> </Tr> <Table> <Tr> <Th_colspan="2"> "Blue Moon" </Th> </Tr> <Tr> <Th_colspan="2"> Single by Elvis Presley </Th> </Tr> <Tr> <Th_colspan="2"> from the album Elvis Presley </Th> </Tr> <Tr> <Th> A-side </Th> <Td> "Just Because" </Td> </Tr> <Tr> <Th> Released </Th> <Td> August 31, 1956 </Td> </Tr> <Tr> <Th> Format </Th> <Td> 7 - inch single </Td> </Tr> <Tr> <Th> Recorded </Th> <Td> August 19, 1954 </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Country </Td> </Tr> <Tr> <Th> Length </Th> <Td> 2: 31 </Td> </Tr> <Tr> <Th> Label </Th> <Td> RCA Victor / RCA Camden / RCA </Td> </Tr> <Tr> <Th> Songwriter (s) </Th> <Td> Richard Rodgers, Lorenz Hart </Td> </Tr> </Table> <Tr> <Th_colspan="2"> "Blue Moon" </Th> </Tr>

Who sang blue moon in the 1950's