Quartet.
A duet.
The general term would be a quintet.
duet
In music, a quartet is an ensemble of four singers or instrumental performers. In pop music they would be a "group".
Quartet.
two people singing together is a duet
A duet.
The general term would be a quintet.
A large number of people together is called a crowd or a group.
A caravan is a group of people traveling together.
gatherings or gathering
duet
A duet. When 2 people start singing together, it's called a duet. When 1 person starts singing and someone else repeats what you sung, it's called a cannon. When 3 people start singing together, it's called a trio. NOW YOU NOW WHAT IT IS USE IT WELL.
A commune.
In music, a quartet is an ensemble of four singers or instrumental performers. In pop music they would be a "group".
nomads or a caravan