Singer near a chalet

• Alpine warbler
• Alps man, at times
• Alpine caller
• Cowboy crooner, at times
• One making frequent pitching changes?
• Alpine soloist
• Alpine vocalist
• Goatherd, in "The Sound of Music"
• Producer of high and outside pitches?

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.