Immediate Effects of Finger Kazoo Exercise With and Without Oropharyngeal Enlargement in the Operatic Singing Voice: A Randomized, Single-Blind, Crossover Controlled Clinical Trial

Key Points

• Improvements in resonance, stability, and efficiency are observed with the finger kazoo exercise.
• The FK exercise led to clinically meaningful enhancements in singing voice performance.
• Performing both versions of the FK exercise showed comparably effective results in operatic singing voice.
• Findings indicate that this semioccluded vocal tract technique can benefit singers and clinicians.