SWMRS (formerly Emily's Army) is an American punk rock band formed in Oakland, California in 2004 by Cole Becker and Joey Armstrong, with Cole's brother Max joining only a few weeks afterwards.
 They drew on a mix of influences ranging from the Beach Boys to the Ramones to create their own brand of rock.
 The band added Travis Neumann in 2009, who later left in 2014 due to creative differences.
 The band released a demo and a string of EPs from 2008 to 2010.
 The band released their first album, "Don't Be a Dick", on June 14, 2011.
 The band's second album, "Lost at Seventeen", was released on June 11, 2013.
 They added Sebastian Mueller as the bassist 2014.
 The band's third studio album, and their first under the name SWMRS after dropping their former name, "Drive North", was released February 12, 2016, via Uncool Records. "
Drive North" was later re-released and remastered after the band was signed to record label Fueled By Ramen on October 13, 2016.
The Steve Miller Band is an American rock band formed in 1966 in San Francisco, California.
 The band is led by Steve Miller on guitar and lead vocals.
 It is best known today for a string of (mainly) mid-1970s hit singles that are staples of classic rock radio, as well as several earlier acid rock albums.
 Miller left his first band to move to San Francisco and form the Steve Miller Blues Band.
 Shortly after Harvey Kornspan negotiated the band’s landmark contract with Capitol Records in 1967, the band shortened its name to the Steve Miller Band.
 In February 1968, the band recorded its debut album, "Children of the Future".
 It went on to produce the albums "Sailor", "Brave New World", "Your Saving Grace", "Number 5", "Rock Love" and more.
 The band's "Greatest Hits 1974–78", released in 1978, sold over 13 million copies.
 The band continued to produce more albums and in 2014 toured with the rock band Journey.
 In 2016, Steve Miller was inducted as a solo artist in the Rock and Roll Hall of Fame.
Drive North is the third studio album by the American rock band SWMRS, released on February 16, 2016, through their own label, Uncool Records.
 It was re-released through Fueled By Ramen on October 14, 2016 when they added the songs "Palm Trees" and "Lose It" to the record.
 It is the band's first studio album and second overall release under the name SWMRS after changing their name in late 2014.
 It is the first album to feature bassist Seb Mueller and guitarist Max Becker, who previously played bass.
 It is the band's first independent release and is also the band's first studio album not to be produced by drummer Joey Armstrong's father, Billie Joe Armstrong.
Tremonti is an American heavy metal band founded and fronted by lead vocalist and guitarist Mark Tremonti, best known as the guitarist of the American rock band Creed, and the lead guitarist of American rock band Alter Bridge.
 The band also consists of rhythm guitarist Eric Friedman and drummer Garrett Whitlock.
 Bassist Wolfgang Van Halen was in the band between 2012 to 2017.
 What originally started as a Mark Tremonti solo project evolved into a fully fledged band after the release of the group's first album, "All I Was", in July 2012.
 That album featured Tremonti himself playing guitar in addition to lead vocals, and the band was joined by Tremonti's Creed and Alter Bridge bandmate Brian Marshall playing bass on tour until his departure later that year.
 He was replaced by Van Halen bassist Wolfgang Van Halen, who contributed to the band's second album, "Cauterize", which was released on June 9, 2015.
 The band also has another album, entitled "Dust", in April 2016, serving as a continuation to "Cauterize".
Rock Love is the sixth album by American rock band The Steve Miller Band, released in 1971.
 All of Miller's previous backing band had left following the recording of the previous album, save bassist Bobby Winkelman.
 They were replaced by members of Winkelman's previous group, the psychedelic rock band Frumious Bandersnatch for this record, including Ross Valory (a future member of Journey) on bass, and Jack King on drums.
 Bobby Winkelman was in the band (having moved back to rhythm guitar) during the live recordings on the album's first side, but is not credited on the album cover.
 David Denny, who later joined the band in 1976, is a guest guitarist (again, not credited) on "Blues Without Blame".
Swim is the fourth EP by American rock band Emily's Army, released on July 22, 2014, through Burger Records and Rise Records.
 The album is the band's first release on Burger Records and last on Rise Records.
 The album was produced by drummer Joey Armstrong's father, Billie Joe Armstrong.
 It is the band's last release under their former name "Emily's Army" after changing their name to "Swimmers" in late 2014, and later "Swmrs" in late 2015 It is also the last record to feature lead guitarist Travis Neumann and last to feature Max on bass before switching to lead guitar.
Lost at Seventeen is the second studio album by American rock band Emily's Army, released on June 11, 2013, through Rise Records and Adeline Records.
 The album was produced by drummer Joey Armstrong's father, Billie Joe Armstrong.
 It is the bands last studio under their former name "Emily's Army" after changing their name to "Swimmers" in late 2014, and later "Swmrs" in late 2015 It is also the last record to feature lead guitarist Travis Neumann and last to feature Max Becker on bass before switching to lead guitar.
 It is also their last studio album to be release through Adeline Records and Rise Records.
Sixty Watt Shaman is an American rock band known for incorporating hard rock with blues, southern rock, doom rock, punk rock and metal influences, originally based out of Eldersburg, Baltimore County, Montgomery County, and Montgomery Village, Maryland.
 The band play a diverse repertoire of hard hitting groove rock and ethereal psychedelic jams, with classic tube tones, echoing heavy blues, southern groove, doom, and even the ghostly spirit of historic Americana and Appalachian bluegrass.
 They formed in 1996 and recorded and released their first studio album in 1998.
 The band last recorded in 2002.
 The last official band tour was in late 2002 through January 2003; but, have made several reunion appearances since, including Desertfest Berlin and Desertfest London in 2014.
 The band continues efforts focused on festival events in the US and Europe, and in 2017 are writing and recording new music for release.
 They are widely regarded as innovators in their musical genre with the "Sixty Watt" sound, and have been both imitated and replicated by peers and bands who followed in their footsteps.
The "California" Tour was a headlining concert tour by American rock band Blink-182 in support of the group's seventh studio album, "California" (2016).
 The tour began on July 21, 2016 in San Diego, California and ended on September 22, 2017 in Las Vegas, Nevada.
 Prior to the tour, the group embarked on the We Are Pirates Tour, performing at several festivals and amphitheaters between May and July 2016.
 Support acts on the initial, first leg of the "California" tour included A Day to Remember, and the All-American Rejects and All Time Low on certain dates.
 A second European tour in mid-2017 included guests Frank Turner, the Front Bottoms, and SWMRS.
Mutemath (sometimes styled as MuteMath or MUTEMATH) is an American alternative rock band from New Orleans that formed in 2002.
 The group consists of lead vocalist and keyboardist Paul Meany, guitarist Todd Gummerman, and bassist Jonathan Allen, but they often perform on any mixture or variation of these instruments.
 They draw heavily from influences in 1960s and 1970s soul, psychedelic rock, and jam band styles, utilizing vintage guitars and amplifiers, as well as Rhodes keyboards, synthesizers, and other electronic instruments such as the keytar.

Question: Which American rock band was founded first, Mutemath or SWMRS?
Answer: Mutemath