<Tr> <Th> </Th> <Td> C ♯, D ♭ (also B) </Td> </Tr> <Tr> <Th> </Th> <Td> D (also C, E) </Td> </Tr> <Tr> <Th> </Th> <Td> D ♯, E ♭ (also F) </Td> </Tr> <Tr> <Th> </Th> <Td> E (also D, F ♭) </Td> </Tr>

Atonal music uses one pitch as a reference point