Former Acappella bass, Tim Storms has set a world record.  In 2000, Tim set a Guinness World Record for the lowest note produced by a human by vibrating his vocal chords down to 8 Hz, which is almost two octaves below the piano.  He also set a Guinness World Record for the widest range for a male.  His records have been published in the recent hardbound release of the Guinness World Records 2006.