Question: Were the bands Adam Again and Mastodon active at the same time?

Context paragraphs:
Lethargy (band): Lethargy was a technical death metal band formed in Rochester, New York in 1992 and disbanded in December 1999.  Their last performance was on Christmas night of 1999.  Drummer Brann Dailor and guitarist Bill Kelliher would later appear in Today Is the Day and Mastodon.  Guitarist and vocalist Erik Burke is currently active in Nuclear Assault, Sulaco, Kalibas, Brutal Truth, and B.C.T. (Blatant Crap Taste).

Dan Desdunes: Daniel F. Desdunes (c.1870 – April 24, 1929) was a civil rights activist and musician in New Orleans and Omaha.  In 1892, he volunteered to board a train car designated for whites in violation of the 1890 Separate Car Act to allow New Orleans civil rights activist involved in the Comité des Citoyens to challenge the law in the courts.  The train he boarded was an inter-state train, and it was found the law did not apply in this case.  Shortly later, another member of the Comité des Citoyens, Homer Plessy, boarded an intrastate train leading to the case, Plessy vs Ferguson.  Desduens became a musician, directing bands, orchestras, and minstrel shows and playing many instruments, including the coronet, the violin, the baritone horn, and the trombone.  He was known for many styles, including minstrel, ragtime, jazz, gospel, classical, and marching.  He performed under the direction of Perry George Lowery in the P. T. Wright led Nashville Students and under Harry Prampin in Lash E. Gideon's Grand Afro American Mastodon Minstrels and Gideons Big Minstrel Carnival.  In 1904 he moved to Omaha where his band became a fixture in civic life and he also led the Boys Town Band at Father Flanagan's Boys Town.  He was described as the "father of negro musicians of Omaha" in Harrison J. Pinkett's 1937 manuscript, "An Historical Sketch of the Omaha Negro."

Tarantulas Records: Tarantulas Records was a punk rock record label generally owned by the band The Explosion and run by their then manager Rama Mayo (and other members of bands involved in the label).  It was officially established in 2002, as an art movement and a protest against record labels constantly signing bands that are merely rehashes of what has already been done before.  Its mission statement is to "sign bands that go against what you believe to be cool."  The most prominent and active bands amongst the Tarantulas (besides the Explosion) were The Distillers, The Bronx, The Static Age, and Darker My Love.  At its height, Tarantulas became less a label and more a movement of people across the US sick of what was happening to music and counterculture—a number of non-musicians (for lack of a better term, fans) identified themselves as Tarantulas, many tattooing themselves with the label logo—and bands turned down other, much bigger labels, to be a part of the group.  Unfortunately, the label/collective ceased to be in 2005/2006 due to disagreements with distributor The Platform Group (a link to Fontana) and other tensions (many rumors and myths persist about all sorts of clashes around this time, centering on 2005 in Silver Lake, LA), but a couple of the label's main bands at the time continued on to other labels and situations, namely The Static Age and Darker My Love.

Blackdiamondskye: Blackdiamondskye was a 2010 North American concert tour by American bands Alice in Chains, Mastodon, and Deftones.  Blackdiamondskye is a portmanteau of the three band's most recent albums: Alice in Chains' "Black Gives Way to Blue", Deftones' "Diamond Eyes", and Mastodon's "Crack the Skye".  The tour kicked off on September 16 in Chicago and culminated on October 16 in Paradise, Nevada.  The tour lasted for 19 shows over the course of one month and featured shows at both outdoor amphitheatres and indoor venues.

Mastodon (band): Mastodon is an American heavy metal band from Atlanta, Georgia.  Formed in 2000, the group is composed of bassist Troy Sanders, guitarists Brent Hinds and Bill Kelliher, and drummer Brann Dailor, all of whom perform vocals in studio (except Bill Kelliher).  They all perform vocals at live shows.  Their musical style features progressive concepts and unique instrumentation.  Mastodon has released seven studio albums, as well as a number of other records.  The band's debut album, "Remission", released in 2002, garnered significant critical acclaim for its unique sound.  Mastodon's second full-length release, "Leviathan", is a concept album based on the novel "Moby-Dick" by Herman Melville.  Three magazines awarded the record "Album of the Year" in 2004: "Revolver", "Kerrang! " and "Terrorizer".

Bloodstock Open Air: Bloodstock Open Air is an English heavy metal festival held annually at Catton Hall in Walton-on-Trent, Derbyshire, since 2005.  Bands that have played at the festival over the years include Twisted Sister, Saxon, Mastodon, Gojira, Behemoth, Slayer, Anthrax, Cannibal Corpse, Venom, Trivium, Rob Zombie, Emperor, Alice Cooper, Motorhead, Kreator, Blind Guardian, Amon Amarth, Megadeth, Testament, Exodus, Immortal, Morbid Angel, Machine Head, Lamb of God, and hundreds of others.  Originally on one stage only, the festival expanded to incorporate a second stage in 2006.  Known simply as The Unsigned Stage, it was designed to provide a platform for the next generation of metal talent to reach a wider audience.  In 2010 it was renamed The New Blood Stage.

The Safety Fire: The Safety Fire was a British progressive metal band formed in London in 2006.  The Safety Fire first made a name for themselves in the UK scene with the release of their critically acclaimed EP "Sections" in 2009 and their reputation as a powerfully energetic live band.  They toured extensively across the UK with bands such as Malefice, The Arusha Accord, Bleed From Within, and Rise To Remain, as well as progressive metal bands Periphery and Monuments throughout Europe.  The Safety Fire also appeared at Sonisphere Festival UK in 2011 alongside Metallica, Slipknot, Mastodon, and The Mars Volta.

Lifesblood: Lifesblood is an EP by American metal band Mastodon.  The sample at the beginning of "Shadows That Move" is from the film "One Flew Over the Cuckoo's Nest".  The sample at the beginning of "Hail to Fire" is from the autobiographical film "The Dancin' Outlaw" by Jesco "Jesse" White.  The samples at the beginning of "We Built This Come Death" and "Battle at Sea" are believed to be taken from recordings of the Nuremberg Trials.  Since this album was only printed for a limited time, it has become quite rare and sought after by Mastodon fans.  The limited prints come in a variety of colors, each with a certain amount produced; 100 clear, 500 red, 500 black and a second press of 500 blue and black.  The EP was also re-released in August 2004 by Relapse Records.

Scion Rock Fest: Scion Rock Fest was an annual heavy metal music festival held in various cities throughout the United States.  The festival lineups included bands from several genres of metal, such as death metal, grindcore, doom metal, metalcore, and experimental metal, and booked headliners that include Cannibal Corpse, Mastodon, Morbid Angel, Down, and Sleep.  The festival was produced by Scion's lifestyle marketing brand, Scion AV, and admission was free every year.  Live video recordings and band interviews were also released after each fest.

Adam Again: Adam Again is an American rock band that was active from 1982 until the 2000 death of founder, leader and vocalist Gene Eugene, with Riki Michele on vocals, Paul Valadez on bass, Jon Knox on drums, Greg Lawless on guitar.  Dan Michaels often played saxophone.

Supporting paragraphs: Adam Again Mastodon (band)
Answer: no