This is my rendition of Glósóli by Sigur Rós, from the 2005 album Takk. It really doesn’t take 211 keys in an octave to play this, but it’s nice to be able to play it in Just Intonation, with different pitches depending on the voice leading. This is a single take. I tried to capture some of the grandeur of the original, though that is really impossible, and I hope you won’t think my effort is too lame … get the real thing here (IMHO possibly the best music video ever made).

The keyboard is a TPX6s with custom color scheme which I built for SYZYGYS keyboardist and composer Hitomi Shimizu. How do you like the colors?

This video shows a custom tuning table built in TPXE, with 4 octaves of 31ET, 2 octaves of the Bohlen-Pierce 13th root of 3 scale (in two different patterns), and Harry Partch’s 43 tone JI scale (also in two different patterns). You can get the .tpx tuning file by right clicking this link to download the file, or by visiting the .tpx file archive.

Previous videos have demonstrated the TPX master tuning using the TPXs internal synthesizer as the sound source. This series of five short videos demonstrates a TPX controller connected to a higher-end sound module, using alternate keyboard layouts via custom designed .tpx tuning tables (more info below).

The above 4 videos use a tuning where columns are harmonics in series with 1/1 at the center, so there are undertones and overtones on each column, and horizontally the columns are related by another JI harmonic series chromatic scale. You can get the TPXE .tpx tuning file by right clicking this link to download the file … or you can visit the .tpx file archive instead.

This last video uses a harmonic lattice tuning where rows are consecutive 5ths and columns are consecutive 3rds. Get the .tpx file by right clicking this link to download the file, or by visiting the .tpx file archive.