Question: In what year was the band who did the song "Doc Holliday" formed?

Context paragraphs:
Volbeat: Volbeat are a Danish heavy metal band formed in Copenhagen in 2001.  They play a fusion of rock and roll, heavy metal and rockabilly.  They are inspired by classic rock and roll artists such as Elvis Presley and Johnny Cash, as well as modern hard rock, thrash metal, heavy metal, alternative rock and hardcore punk groups.  Their current line-up consists of vocalist and guitarist Michael Poulsen, guitarist Rob Caggiano, drummer Jon Larsen and bassist Kaspar Boye Larsen.  The band is signed to Dutch label Mascot Records and has released six studio albums and one DVD.  All of their studio albums have been certified gold in Denmark.  Their second album "Rock the Rebel/Metal the Devil" received platinum status, and their 2010 release "Beyond Hell/Above Heaven" was subject to widespread international critical acclaim, receiving double platinum in Denmark, platinum in Finland and Germany, and gold in the United States, Sweden and Austria.  Volbeat's sixth album entitled "Seal the Deal & Let's Boogie" was released worldwide on 3 June 2016.

Carol Stone (actress): Carol Montgomery Stone (February 1, 1915 – June 10, 2011) was an actress who played "Big Nose Kate", or Kate Holliday, the common law wife of Doc Holliday, in ten episodes in the 1957-1958 season of the ABC/Desilu western television series, "The Life and Legend of Wyatt Earp".

Doc Holliday (announcer): Doc Holliday is a radio personality.  His career began during high school in early 1979 in New Jersey.  He was the anchor of the "Doc & Johnny Morning Show" on WXXL-FM in Orlando, Florida, for over 17 years, before resigning in March 2007.  Also, Doc is the former arena announcer for the Orlando Predators of the Arena Football League.

Oakhurst (band): is a bluegrass-rock band from Denver, CO.  Founded by bassist Johnny James Qualley and Singer Adam Patrick Hill in 1999, Oakhurst became a full-time nationally touring act in 2004 and has produced 5 records.  Most recently Barrel (2012) which was produced in Nashville, TN by Joe Pisapia.  Whether it's in front of thousands of festivarians, hundreds of friendly bar dancers, dozens of fellow pickers, or each other in the studio, Oakhurst leaves it all on the field.  This quintet brings their stories to the stage in the form of pure energy and passion for acoustic music.  With gifted percussion and a driving low end, the banjo, guitar, fiddle and vocals have all the space they need to tell you a story.  Love, life, loss, and whiskey are likely to be the topic of the day- come on and jump in the get down for a spell... The band spikes traditional bluegrass with rock & roll and a kamikaze rhythmic sensibility.  That danceable concoction along with stringed shootouts, ringing harmonies, and citybilly swagger keeps the band in high demand.  Oakhurst’s unpretentious, go-for-it interpretation of a genre that's roots are often handled reverently, sparks interest in bluegrass by folks who don’t know Doc Watson from Doc Holliday.

Cochise, Arizona: Cochise is an unincorporated community located in Cochise County, Arizona, United States.  The city was created alongside the Southern Pacific Railroad in the 1880s.  The city was primarily a stop for coal and water which were needed for trains at the time.  At its peak, the town had a population of approximately 3,000 people.  Today, only 50 people still live in Cochise.  The town is also home to several historic locations.  In 1899, Big Nose Kate, the famed sidekick of Doc Holliday, lived in Cochise while she was working at the Cochise Hotel after Holliday's death.

Hour of the Gun: Hour of the Gun is a 1967 Western film depicting Wyatt Earp and Doc Holliday during their 1881 battles against Ike Clanton and his brothers in the Gunfight at the O.K. Corral, and the gunfight's aftermath in and around Tombstone, Arizona, starring James Garner as Earp, Jason Robards as Holliday, and Robert Ryan as Clanton.  The movie was directed by John Sturges.

Doc (film): Doc is a 1971 American western film, which tells the story of the gunfight at the O.K. Corral and of one of its protagonists, Doc Holliday.  It stars Stacy Keach, Faye Dunaway, and Harris Yulin.  It was directed by Frank Perry.  Pete Hamill wrote the original screenplay.  The film was shot in Almeria in southern Spain.

Gunfight at the O.K. Corral: The Gunfight at the O.K. Corral was a 30-second shootout between lawmen and members of a loosely organized group of outlaws called the Cowboys that took place at about 3:00 p.m. on Wednesday, October 26, 1881 in Tombstone, Arizona Territory.  It is generally regarded as the most famous shootout in the history of the American Wild West.  The gunfight was the result of a long-simmering feud, with Cowboys Billy Claiborne, Ike and Billy Clanton, and Tom and Frank McLaury on one side and town Marshal Virgil Earp, Special Policeman Morgan Earp, Special Policeman Wyatt Earp, and temporary policeman Doc Holliday on the other side.  All three Earp brothers had been the target of repeated death threats made by the Cowboys, who objected to the Earps' interference in their illegal activities.  Billy Clanton and both McLaury brothers were killed.  Ike Clanton claimed that he was unarmed and ran from the fight, along with Billy Claiborne.  Virgil, Morgan, and Doc Holliday were wounded, but Wyatt Earp was unharmed.  The shootout has come to represent a period of the American Old West when the frontier was virtually an open range for outlaws, largely unopposed by law enforcement officers who were spread thin over vast territories.

Doc Holliday (song): "Doc Holliday" is a song by Danish heavy metal band Volbeat.  The song was released as the eighth and final single from the band's fifth studio album "Outlaw Gentlemen & Shady Ladies".  The song is about the outlaw of the same name.

O.K. Corral hearing and aftermath: The O.K. Corral hearing and aftermath was the direct result of the 30-second Gunfight at the O.K. Corral in Tombstone, Arizona Territory on October 26, 1881.  During that confrontation, Deputy U.S. Marshal and Tombstone Town Marshal Virgil Earp, Assistant Town Marshal Morgan Earp, and temporary deputy marshals Wyatt Earp and Doc Holliday shot and killed Billy Clanton, and Tom and Frank McLaury.  Billy's brother Ike, who had repeatedly threatened to kill the Earps for some time, had been present at the gunfight but was unarmed and fled.  He filed murder charges against the Earps and Doc Holliday on October 30.

Supporting paragraphs: Doc Holliday (song) Volbeat
Answer: 2001