Beethoven Tempest Sonata, 1819 Broadwood, Unequal Temperament
Beethoven Tempest Sonata on an 1819 Broadwood tuned to Kirnberger III temperament. This piano was the same model as that which was given to Beethoven. However, the hammers have been felted and possibly the strings in the treble are a lighter gauge to reduce tension on the instrument.