Isn’t this sort of the idea behind Solfege? Not focusing on the assigned pitch aspect of it right now, but the use of syllables with no intent to form words. Also, I am aware that there has been different consonant vowel (syllable) combinations used for Solmization throughout history. (Syllable: a unit of pronunciation having one vowel sound, with or without surrounding consonants, forming the whole or a part of a word).
I’ve not personally listened to many genres outside of pop, hip hop, country, classical etc. So i’ve been wondering if there are instances of songs where the vocals are written with “Solfege” instead of beginning with actual words (lyrics) first.
By advantage, what I’m thinking is that writing this way would allow a person to begin completely "right brain", not worrying about what words they are saying and the meaning of them. Similar to playing an instrument.