Man With WORLD'S LOWEST VOICE Sings "Lonesome Road"    

https://www.youtube.com/watch?v=xtAltg0ZIrY

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   Tim Storms 7.85 Hz (B-2)  

 https://www.youtube.com/watch?v=ftpcUK6Oamc

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At mass, I often sing many of the notes/songs an octave lower than everybody else, depending on my voice that morning. As the day goes on, the lower end of my range comes up and I can't hit those real low notes anymore.

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                  Adam Lopez - Highest Vocal Note- Guinness World Record    

https://www.youtube.com/watch?v=Kdp4NHWr7G8

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That doesn't sound like singing and is actually irritating.....but still impressive.