Maynard James Keenan is a singer .
Maynard James Keenan , born James Herbert Keenan ; April 17th , 1964 , often referred to by his initials `` MJK '' , is an American music journalist , record producer , winemaker , and actor , best known as the interviewer of the Grammy Award-winning progressive metal band `` Tool '' .
Maynard James Keenan