Most Kpop groups tend to have assigned positions and roles for their members. These positions often come with a main and a lead, based on their skills and abilities. It's important to note that not all groups have these positions with the same strict criteria and rules. There are three 'levels' or types: the main vocalist, the lead vocalist, and the sub vocalist or simply a vocalist.Vocalist: There are at least 2-3 vocalists in a group and the more there are members, the more vocalists they would have.Positions and roles commonly found in Korean idols groups are: Some groups may forgo all these roles and have a more flexible arrangement (or even start out with assigned positions only for these to lose relevance later on), while others may have well-rounded idols that can assume different roles at once.
The one in the main position has the best singing skills and technique out of all the members which is what earned them this position.
