What is the name of a female soloist that sings traditional Scottish vocal only music?

A female soloist who sings traditional Scottish vocal-only music is known as a "puirt a beul" singer. The term "puirt a beul" literally translates to "mouth music" in Scottish Gaelic and refers to a unique vocal tradition in Scottish folk music. Puirt a beul singing involves complex rhythmic patterns, intricate vocal techniques, and Gaelic lyrics or nonsense syllables. It is often unaccompanied by instruments, allowing the singer's voice to take center stage. Prominent puirt a beul singers include Flora MacNeil, Margaret Stewart, and Julie Fowlis.