Home page of NDSU Extension Service - Mercer County. NDSU Extension Service in Mercer County gives local residents easy access to the resources and expertise of North Dakota State University. Through educational programs, publications, and events, extension agents deliver unbiased, research-based information to Mercer County citizens.
World records and extremes of vocal range. 1  The highest vocal range in the world, according to the Guinness Book of World Records, is that of Georgia Brown; a Brazilian female singer who produces unusually high pitches using a whistle register. Her range extends eight octaves, from G2 to G10.
Sonny Geraci. 1  Sonny Geraci is proclaimed by many as the most versatile singer and performer in the business today. 2  Sonny was a street kid, growing up in Cleveland to the music of MotownÂ®, the British invasion and all the music that came before. 3  Sonny Geraci's biggest hit song was Precious & Few.