country music tours

What is the proper terminology or name for a country music act consisting of three or more people read details?
What is the proper terminology or name for a country music act consisting of three (3) or more people?
Like the The Statler Brothers, Alabama and The Oak Ridge Boys.
I am asking about three (3) or more that tour together, not just three (3) or more singers that team up for one recording, or a single song or performance.
A musical group
George Jones – The Grand Tour
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