NOW ONLY available as a digital download here. The download price is $10.00.
This collection of MP4 tracks sampled at 192k contains drones of 2 tonics an octave apart and a fifth, in just intonation. Each key lasts roughly six minutes and the sequence plays through all the keys in order (the circle of 4ths starting from C). This kind of technique has been used in Indian classical music for hundreds of years, to perfect and deepen intonation ability. One can play single notes, scales, exercises, double stops, difficult passages, or fiddle tunes to these drones; or you can just play freely and wander among the many-layered intonations of your mind and body.
Makes a great gift for any string musician, especially no-fret folks. Vocalists dig it too!
$13 price plus $2 shipping.