The seventeen tone piano project is an ambitious undertaking that involves tuning two pianos to share the notes of seventeen tone equal temperament (seventeen equally spaced notes to the octave instead of twelve). This is an unique and exotic tuning. It is characterised by fifths that are somewhat sharper than purely tuned fifths. (Twelve tone equal temperament and mean-tone tunings have somewhat flat fifths.) It also has a neutral third in addition to versions of major and minor thirds.
That's enough theory, it's better to listen to it, so I have included this video of phase two of the project.
Seventeen Tone Piano Project, Phase Two
Phase three is scheduled to be performed this coming Monday. I'm excited because I have submitted one of my own pieces for the concert. It's a gentle nocturne. I tried to write a piece that contrasts with the reputation of 17ET as being somewhat rough sounding. Time will tell if I succeeded or not.
Update: Recordings of phase 3 are archived here.