On the last drafts, I focus on the words themselves, including the rub of vowels and consonants, stressed and unstressed syllables.

WSJ: Ron Rash, Author of Serena and Nothing Gold Can Stay, on Inspiration | Word Craft

The whistled language replaces each vowel or consonant with a whistling sound: two distinct whistles replace the five Spanish vowels, and there are four whistles for consonants.

UNESCO: Culture