What is it called when one voice type sings a 'solo'?

1. What do you call a vocal solo?
2. What is it called when a singer sings alone?
3. What is singing together called?
4. What is it called when singers sing at different times?

What do you call a vocal solo?

A cappella (/ˌɑː kəˈpɛlə/, also UK: /ˌæ -/, Italian: [a kkapˈpɛlla]; Italian for 'in the style of the chapel') music is a performance by a singer or a singing group without instrumental accompaniment, or a piece intended to be performed in this way.

What is it called when a singer sings alone?

A Cappella: Singing without any form of instrumental accompaniment.

What is singing together called?

A body of singers who perform together as a group is called a choir or chorus.

What is it called when singers sing at different times?

A round (also called a perpetual canon [canon perpetuus] or infinite canon) is a musical composition, a limited type of canon, in which a minimum of three voices sing exactly the same melody at the unison (and may continue repeating it indefinitely), but with each voice beginning at different times so that different ...