Something really new, an acoustic synthesizer!
Yes, it's for real. This is an acoustic instrument, with no speakers or pickups or audio outputs, that has the sonic power of a conventional electronic synthesizer. This track, recorded of course with a microphone suspended over the Spectrum Piano, perhaps best shows off its abilities as an acoustic synthesizer. All sounds (except windchimes) 100% Spectrum Piano.
Doug Blackley explains
The Spectrum Piano is a new acoustic instrument that uses controlled natural magnetic force to vibrate the strings of a grand piano. This new instrument, like the piano, is a fully acoustic instrument (using no speakers) but has the sonic power and capabilities normally found only in pipe organs and synthesizers.