<P> Strings run parallel to the top, between the mounting plate and the tuning pins, and pass under the chord bar assembly . Modern autoharps most often have 36 strings, with some examples having as many as 47 strings, and rare 48 - string models (such as Orthey Autoharps No. 136, tuned to G and D major). They are strung in a semi-chromatic manner which, however, is sometimes modified into either diatonic or fully chromatic scales . Standard models have 12, 15 or 21 chord bars available, providing a selection of major, minor, and dominant seventh chords . These are arranged for historical or systemic reasons . Various special models have also been produced, such as diatonic one -, two -, or three - key models, models with fewer or additional chords, and a reverse - strung model (the 43 - string, 28 - chord Chromaharp Caroler). </P> <P> The range is determined by the number of strings and their tuning . A typical 36 - string chromatic autoharp in standard tuning has a 31⁄2 octave range, from F2 to C6 . The instrument is not fully chromatic throughout this range, however, as this would require 44 strings . The exact 36 - string tuning is: </P> <Table> <Tr> <Th> Octave </Th> <Th_colspan="12"> Tuning </Th> </Tr> <Tr> <Td> Bass octave </Td> <Td> F2 </Td> <Td> </Td> <Td> G2 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> C3 </Td> <Td> </Td> <Td> D3 </Td> <Td> </Td> <Td> E3 </Td> </Tr> <Tr> <Td> Tenor octave </Td> <Td> F3 </Td> <Td> F ♯ 3 </Td> <Td> G3 </Td> <Td> </Td> <Td> A3 </Td> <Td> A ♯ 3 </Td> <Td> B3 </Td> <Td> C4 </Td> <Td> C ♯ 4 </Td> <Td> D4 </Td> <Td> D ♯ 4 </Td> <Td> E4 </Td> </Tr> <Tr> <Td> Alto octave </Td> <Td> F4 </Td> <Td> F ♯ 4 </Td> <Td> G4 </Td> <Td> G ♯ 4 </Td> <Td> A4 </Td> <Td> A ♯ 4 </Td> <Td> B4 </Td> <Td> C5 </Td> <Td> C ♯ 5 </Td> <Td> D5 </Td> <Td> D ♯ 5 </Td> <Td> E5 </Td> </Tr> <Tr> <Td> Soprano octave </Td> <Td> F5 </Td> <Td> F ♯ 5 </Td> <Td> G5 </Td> <Td> G ♯ 5 </Td> <Td> A5 </Td> <Td> A ♯ 5 </Td> <Td> B5 </Td> <Td> C6 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Octave </Th> <Th_colspan="12"> Tuning </Th> </Tr>

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