Have people listening recommendations to hear music without equal temperament? Having played the violin for over 30 years - and sung a bit of barbershop - this is the first time I've come across it, and I'd like to hear the difference to recognize it.
Byzantine chant divides an octave into 72 comas. The intervals for the diatonic first mode are 10-8-12-12-10-8-12, although this changes when descending. For more information, see http://www.kelfar.net/orthodoxiaradio/Diatonic.html
