Question: Are Jens Kidman and Nate Ruess both lead vocalists?
Related documents: [0]  [DOC] Nathaniel Joseph Ruess (born February 26, 1982) is an American singer and songwriter. He is the lead singer of the indie pop band Fun., and previously of The Format. As of 2015, he also performs as a solo musician. [END] 
[1]  [DOC] Jens Kidman (born 8 June 1966) is a Swedish metal vocalist. He is best known for being the lead vocalist for the Swedish extreme metal band Meshuggah. He is famous for his very aggressive shouts and screams and for his unique stage presence. [END] 
Answer: 
yes
yes