Huh; quite right. I've had it in my head for several years that Thai, at least, was tonal based on absolute pitch; but it looks like that's wrong. I did turn

Huh; quite right. I've had it in my head for several years that Thai, at least, was tonal based on absolute pitch; but it looks like that's wrong. I did turn up that a much larger percentage of people have perfect pitch in populations that speak tonal languages.