Goatherd, in "The Sound of Music"

• Alpine show-off
• Matterhorn vocalist
• Peak performer?
• Person who sings like someone in the Swiss Alps
• Swiss singer, perhaps
• Singer heard in the Cliff Hangers game on "The Price Is Right"
• Producer of high and outside pitches?
• One making frequent pitching changes?

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.