Question: Sam Endicott and Jens Kidman are both best known for being what?
Context: Nick Patrick is a British actor, best known for playing the part of SRO (Station Reception Officer) Julian 'JT' Tavell, in the ITV police procedural "The Bill" from 2005 to 2006.  He also played the killer, Hamish Endicott in "Prime Suspect", Season 4 "Inner Circles". 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. Peter Alan Gruner Jr. (born May 11, 1974) is an American road agent and retired professional wrestler, better known by his ring name Billy Kidman.  He is currently signed to WWE, where he works as a producer.  As a wrestler, Kidman is best known for his work with World Championship Wrestling (WCW) and World Wrestling Federation / Entertainment (WWF/E) throughout the late 1990s and early 2000s. Samuel Bingham "Sam" Endicott (born August 13, 1974) is an American songwriter, multi-instrumentalist, actor and director.  He is best known as the lead vocalist of the Bravery, with whom he recorded three studio albums.  He is currently the lead singer of The Mercy Beat. Meshuggah is a Swedish experimental metal and death metal quintet formed in 1987 in Umeå.  Meshuggah is known for its use of extended polymetric passages, complex time signatures, dissonant guitar riffs, and harsh vocals.  As of 2008, the band consists of vocalist Jens Kidman, guitarists Fredrik Thordendal and Mårten Hagström, bassist Dick Lövgren and drummer Tomas Haake. Jens Ritter Instruments is a manufacturer of high-end electric stringed instruments.  It was founded by Jens Ritter in the mid-1990s and was known as Ritter Bass Guitars until 2010 when Jens expanded his line to include guitars.  Jens produces 50 to 60 handmade instruments each year in his shop located in the small wine town of Deidesheim, Germany.  A number of well-known bassists play Ritter Basses including Phil Lesh, Josh Dunham and Doug Wimbish.  Jens Ritter Instruments are best known for their progressive design and construction, artistic appearance and limited availability.  They also produce strings and other accessories. Brian Joseph Karscig is a musician, songwriter, and record producer, but is mostly recognized as the co-singer/guitarist/songwriter for the American Rock and Roll Band Louis XIV signed to Atlantic Records.  He also is the singer/guitarist/songwriter of American Rock Band The Nervous Wreckords.  Karscig owns Nervous Productions, and co-owner of "The Pineapple Recording Group", and has produced records for artists such as Anya Marina (Slow and Steady Seduction: Phase II) for Chopshop/Atlantic Records, The Silent Comedy, Transfer, Les Gars, Apes of Wrath, Republic of Letters, and Subsurfer.  Aside from his songwriting with LOUIS XIV, and The Nervous Wreckords, Karscig is also known for his co-writes with Brandon Flowers of The Killers ("Thief in the Choir" and "Turn the Light On"), and Sam Endicott of The Bravery ("Send it in a Letter"), as well as Anya Marina ("Afterparty at Jimmy's) and A.J. Croce's 2013 single "Keep the Change".  Karscig is also credited with additional vocals on The Killers 2006 release "Sam's Town".  Most recently Karscig toured South America as the piano/guitar player for Brandon Flowers "Desired Effect" Tour, and also joined The Killers as 2nd guitar player for their 2016 US/Canada tour.  Although The Nervous Wreckords was Karscig's solo effort after Louis XIV, Karscig started his first solo record under his birth name Brian Karscig due out early 2017. Courtney Johnson (December 20, 1939 – June 6, 1996) was an American banjo player, best known for his work as an original member of the band New Grass Revival.  Influenced by Ralph Stanley and his Clinch Mountain Boys, Johnson is often considered to be an inventor of the newgrass style of banjo playing, polished and improved later on by such personalities as Béla Fleck, Alison Brown, Scott Vestal of Sam Bush Band and Jens Krüger of Kruger Brothers. Jens Bille (or Bilde; born January 26, 1531 on Varberg, died April 28, 1575) was a son of Claus Bille (1490-1558) and Lisbeth Ulfstand (died 1540).  In his time he was a powerful servant of the Danish monarchy; but he is probably best known today as the main scribe of one of the earliest surviving books of Danish poetry, Jens Billes visebog. Mårten Hagström, (born 27 April 1971) is the rhythm guitarist for the Swedish progressive metal band Meshuggah.  He joined the band after the release of their first album, which allowed Jens Kidman to focus on his vocal performances and give up rhythm guitar duties.  He and fellow Meshuggah guitarist Fredrik Thordendal are known for their complex rhythm guitar playing.  Hagström has cited Rush, James Hetfield, Squarepusher, Autechre, Strapping Young Lad, and GISM as influences.
Answer: lead vocalist