toonikõrgus
Toonikhõrgus refers to a traditional Estonian folk music term that describes the highest pitch attainable by a specific traditional singing voice or instrument. This concept is not about a universally fixed note but rather a relative high point that varies depending on the context, the singer, or the instrument being used. It is a key element in understanding the melodic contours and expressive capabilities of Estonian folk singing styles, particularly those characterized by polyphony and complex vocal ornamentation.
The notion of toonikhõrgus played a role in the performance practice of certain folk music traditions, influencing