They came and hooked up some kind of fancy machine to him that records hertz, because he sings below human detection.What's his name?

Tim Storms
He set the Guinness world record for the lowest note ever sung. He's also a member of the group "Rescue"

I believe it was two octaves below the lowest note on the piano.

Both right, thanx.

http://www.cnnw.com/articles/articles03-03-4.html

I find this amazing. I knew that elephants used infrasonic vocalizations (and maybe whales) for long range communication, but I had no idea that humans could reach that low. I wonder if elephants would react to him if he hit those notes near them.