A group of four people singing is called a quartet.
No, it is the present participle of "to sing" and may be a verb, noun (gerund), or adjective (e.g. singing carolers).
Pianissimo would apply, but even quieter that that (ppp) Pianississimo is the word
You might be looking for the term polyphonic. Its basically the only term to describe the technique.
Parallelism ~ Apex ~
The Hawaiian word for sun is La
The Hawaiian word for dog is ilio
The Hawaiian word for rainbow is anuenue.
the hawaiian word for moon is mahina
whats the hawaiian word for art?
"pea" is the Hawaiian word for bear
This is not a Hawaiian word. The Hawaiian language does not contain the letter "R".
There is no native Hawaiian word for monkey, but in Modern Hawaiian, you could use the word keko.
There is no Hawaiian word for valentine. You could use the English word, which would be spelled walenekaine in Hawaiian.
In Hawaiian, "makalah" means "sore" or "sensitive" when referring to a physical injury or wound.
The word for candy in Hawaiian is'Kanake'
The Hawaiian word for independence is "kūʻokoʻa."