Jimmie Rodgers or Tex Owens, musically

• Alps man, at times
• Goatherd, in "The Sound of Music"
• Alpine singer, perhaps
• The lonely goatherd, in a "Sound of Music" song
• Alpine soloist
• Peak performer?
• Swiss singer, perhaps
• Singer heard in the Cliff Hangers game on "The Price Is Right"
• One calling from a Swiss mountaintop

Wiktionary Word definitions in Wiktionary
n. One who sings so that their voice fluctuates rapidly between their normal chest voice and a falsetto, one who yodels.