Sam Endicott and Jens Kidman are both best known for being what?
Sam Endicott: Samuel Bingham "Sam" Endicott (born August 13, 1974) is an American songwriter, multi-instrumentalist, actor and director. Sam Endicott:  He is best known as the lead vocalist of the Bravery, with whom he recorded three studio albums. Jens Kidman: Jens Kidman (born 8 June 1966) is a Swedish metal vocalist. Jens Kidman:  He is best known for being the lead vocalist for the Swedish extreme metal band Meshuggah.
lead vocalist