the tuner is satisfied that all the notes in the octave are correctly tuned. The rest of the piano is then tuned to the temperament octave, using octaves and other intervals as checks. If an electronic tuning device is used, the temperament step might be skipped, as it is possible for the tuner to adjust notes directly with the tuning device in any reasonable order. See also Piano acoustics Institute of Musical Instrument Technology Pseudo-octave Stretched tuning Notes References . 1954, 1885. . External links How to tune a piano Midrange Piano Tuning, Octave Types and Distribution Procedure For Tuning A Piano History of Piano Tuning Gill Green MA How often should a piano be tuned Musical tuning Piano Articles containing video clips