Possible Clues:

• Sings like the Swiss
• Alternatives to Ho Hos
• Unknown poem Lowry perhaps sings
• Alpine warbling
• Mountaintop melodies
• In Switzerland, calls for one vote to remove top posers
• Country singing effects
• Devil's-food cake treats
• In Switzerland, calls Poetry Foundation lyric poem long and sanctimonious from the start
• Techniques involving falsetto