If you don't know what it is, check out this link
http://en.wikipedia.org/wiki/Overtone_si...
Here is a video:
http://www.youtube.com/watch?v=ZczbWh6hd...
It's basically singing two notes at the same time. It sort of sounds like a Didgeridoo.
I know Little Jimmy Urine of Mindless Self Indulgence is capable. I think I watched the lead singer of Fair To Midland do it live. Are there any others?
I know there are a few Jazz musicians that can do it, but I want to limit this to Rock. Janis Joplin, although I don't think it was intentional. Just the way her voice would break up. Liam Gallagher | 