Question: Spike Slawson and Kirk Windstein, are both artists in which occupation?

full_context: Document 1: Dave Raun: Dave Raun (born June 7, 1970) a resident of Fresno, California, is the drummer for the seminal California punk rock band Lagwagon. He also filled in on drums for a short period for Sean "SC" Sellers of Good Riddance. Additionally, Raun drums for the punk rock cover band/supergroup Me First and the Gimme Gimmes, with fellow Lagwagon member Joey Cape. Me First and the Gimme Gimmes also features
Document 2: Spike Slawson: Spike Slawson is an American punk rock musician, a member of Me First and the Gimme Gimmes, Swingin' Utters, Filthy Thievin' Bastards, Re-Volts, and Uke-Hunt.
Document 3: Fat Mike: Michael John Burkett (born January 31, 1967), also known as Fat Mike, is an American musician and producer. He is the bassist and lead vocalist for the punk rock band NOFX and the bassist for the punk rock supergroup cover band Me First and the Gimme Gimmes. He was also a temporary bassist for the band Against Me!
Document 4: Punk rock: Punk rock (or "punk") is a rock music genre that developed in the early to mid-1970s in the United States, United Kingdom, and Australia. Rooted in 1960s garage rock and other forms of what is now known as "proto-punk" music, punk rock bands rejected perceived excesses of mainstream 1970s rock. Punk bands typically produced short or fast-paced songs, with hard-edged melodies and singing styles, stripped-down instrumentation, and often political, anti-establishment lyrics. Punk embraces a DIY ethic; many bands self-produce recordings and distribute them through informal channels.
Document 5: Behind the Blackest Tears: Behind the Blackest Tears is the second studio album by Kingdom of Sorrow, a group featuring Jamey Jasta of Hatebreed and Kirk Windstein of Crowbar and Down. The album was released by Relapse Records.
Document 6: Kirk Hammett: Kirk Lee Hammett (born November 18, 1962) is an American musician who has been lead guitarist and a contributing songwriter for the heavy metal band Metallica since 1983. Before joining Metallica he formed and named the band Exodus. In 2003, Hammett was ranked 11th on "Rolling Stone"<nowiki>'</nowiki>s list of The 100 Greatest Guitarists of All Time. In 2009, Hammett was ranked number 15 in Joel McIver's book "The 100 Greatest Metal Guitarists".
Document 7: Kirk Windstein: Kirk Windstein (born April 14, 1965) is an American musician. He is a founding member of the sludge metal band Crowbar, and formerly played with the heavy metal band Down from 1991 to 2013. In 2005, Windstein formed Kingdom of Sorrow with Jamey Jasta of Hatebreed. Their debut album was released in 2008. Windstein began his musical career in 1985 as a guitarist for a cover band called Victorian Blitz, and in 1988 joined a hardcore punk band called Shell Shock as a vocalist and guitarist.
Document 8: Filthy Thieving Bastards: The Filthy Thieving Bastards is an American folk/punk rock group formed in 2000 in San Francisco, California. The band was originally a side project put together by Johnny Bonnel and Darius Koski of the Swingin' Utters. Spike Slawson (also from Swingin' Utters) later joined the band, along with recording engineer Randy Burk. Greg Lisher from Camper Van Beethoven guested on guitar for several songs on their second release. Their music is influenced by folk rock, Celtic rock, country music, 60's pop, and punk rock, with an acknowledged and oft-noted debt to the music of The Pogues.
Document 9: Tony Sly: Anthony James Sly (November 4, 1970 – July 31, 2012) was an American singer, songwriter and guitarist, best known as the front man of the punk rock band No Use for a Name. In his later years he also gained attention for his acoustic solo work, with two acoustic split albums he released with Lagwagon front man Joey Cape and two solo albums.
Document 10: Slipknot (band): Slipknot is an American heavy metal band from Des Moines, Iowa. The band was founded in September 1995 by percussionist Shawn Crahan and drummer Joey Jordison. After several lineup changes in its early years, the band settled on nine members for more than a decade: Corey Taylor, Mick Thomson, Jim Root, Paul Gray, Craig Jones, Sid Wilson, Shawn Crahan, Chris Fehn and Joey Jordison. Gray died on May 24, 2010, and was replaced from 2011–2014 by former guitarist Donnie Steele. Jordison left the band on December 12, 2013. Steele left during the recording sessions for "". The band found replacements in Alessandro Venturella on bass and Jay Weinberg on drums. After the departure of Jordison, as of December 2015 the only founding member in the current lineup is percussionist Crahan; the other remaining members of Slipknot have been members since the release of the band's 1999 eponymous debut album.
Document 11: Down (band): Down is an American heavy metal supergroup that formed in 1991 in New Orleans, Louisiana. The band's current lineup consists of vocalist Phil Anselmo (Pantera), guitarist Pepper Keenan (Corrosion of Conformity), guitarist Bobby Landgraf (Honky), bassist Pat Bruders (Goatwhore), and drummer Jimmy Bower (Crowbar, Eyehategod, and Superjoint Ritual). Since their formation, Down has gone on hiatus twice and they have released five studio albums. The first three were LPs entitled "NOLA" (1995), "" (2002), and "" (2007). In 2008, the band began working on additional material, which resulted in two EPs entitled "Down IV – Part I", released in September 2012 and "Down IV – Part II", released in May 2014.
Document 12: Todd Strange: Todd Strange (born January 31, 1966) is a bassist who played live on the first Down album "NOLA" and with Crowbar. Forming Crowbar with Kirk Windstein (Down), Matt Thomas and Craig Nunenmacher (Black Label Society), they released the best-selling albums of the band's discography. This included the Crowbar self-titled LP with the hits "All I Had (I Gave)", "Existence is Punishment", "No Quarter" (by Led Zeppelin) and "I Have Failed", produced by Phil Anselmo. By 1994, Phil put his band Pantera to the side and resurrected Down which was sidelined for Pantera in the late 1990s. The band released NOLA in reference to the band's hometown, New Orleans, Louisiana, and played 13 shows. Eventually, the album sold 500,000 copies and was certified Gold by the RIAA. Soon after, Phil returned to Pantera and Crowbar continued, and the two bands partnered up for tours in 1996. As a result, Todd, Kirk and the rest of Crowbar appear in Pantera's "Home Videos 3" in the credits, and Kirk and the band are seen in scenes including the notorious clip of Kirk dressed up as the Hulk. This event is also included in Crowbar's 1996 home video "Like Broken", but contains slightly different footage.
Document 13: Uke-Hunt: Uke-Hunt is a ukulele-based cover band fronted by Spike Slawson from Me First and the Gimme Gimmes. Although both this and the Gimmes are cover bands, they have very different approaches. While the Gimmes generally pick non-rock songs and rock them out and speed them up to turn them into punk music, while in this band, the songs picked are generally upbeat songs that are then slowed down and mellowed out.
Document 14: Kingdom of Sorrow: Kingdom of Sorrow is an American sludge metal band which features Kirk Windstein of Crowbar and Down, along with Jamey Jasta of Hatebreed.
Document 15: Down IV – Part I: Down IV – Part I (informally known as the The Purple EP) is the first EP by sludge/southern metal band Down. It was released on September 18, 2012. It is the first album featuring bassist Pat Bruders due to the departure of former bassist Rex Brown in 2011, and the last to feature guitarist Kirk Windstein, who left in 2013.
ground_truth: musician