Hello, I learned last weekend that Michael Harrison of Faust Harrison Pianos devised and rebuilt an existing grand for extended Just Intonation. This Harmonic Piano apparently works through a multiplexing arrangement; it is single-strung and employs the unachorda stop to shift between two 12-tone pitch sets. A brief overview of his work is presented at http://imusic.com/showcase/contemporary/michaelharrison.html and his cd "From Ancient Worlds" is available from the Just Intonation Society at http://www.dnai.com/~jinetwk/jistore.html Regards, Clark
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