Maynard James Keenan (Tool,A perfect,circle,Puscifer), Adam jones(Tool), Jonatan Davis (Korn), Chino Moreno (Deftones,Team sleep), Eddie Vedder (Pearl jam), Brandon Boyd (Incubus), Mike Einziger (Incubus), Wes Borland (Limp bizkit,Big dumb face,Black lights burn) Tom Yorke (Radiohead).