How do we classify the Compton/Erlich scheme of tuning multiple 12-et keyboards 15 cents apart? Some sort of planar temperament with the following commas? 531441/524288 (pythagorean comma) 5120/5103 (difference between syntonic comma and 64/63) Is this right? -Carl ____________________________________________________________ To learn how to configure this list via e-mail (subscribe, unsubscribe, etc.), send a message to listar@xxxxxxxxxxxxx with the subject line "info tuning-math". Or visit the website: < http://www.freelists.org/list/tuning-math > .