Chord Board

The Chord Board is a color-coded slide rule that displays the notes necessary to form chords in music or transpose. The multicolored card consists of a 2 -octave piano keyboard with numbered note positions and a central slider that shows the notes. The Chord Board was designed by Martin H. Samuel on O'ahu (Hawaii) and 1979 applied for a patent. Originally printed in Addison ( Illinois) the Chord Board of Datalizer. It is used by musicians from all areas as a tool. 2010 was published in the Chord Board of Houdah software as an application for Apple mobile devices. The Chord Board app can be used as an electronic tuner for different stringed instruments.

Credentials

  • Chord Board DE
  • PrMac Chord Board Review
  • Chord Board App.
Transposition (music) Addison (Illinois)
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