Question: What year was the band who released Signs of Light formed?

full_context: Document 1: Heart (band): Heart is an American rock band that first found success in Canada and later in the United States and worldwide. Over the group's four-decade history, it has had three primary lineups, with the constant center of the group since 1973 being sisters Ann Wilson (lead singer) and Nancy Wilson (guitarist). Heart rose to fame in the mid-1970s with music influenced by hard rock and heavy metal, as well as folk music. Their popularity declined in the early 1980s, but the band enjoyed a comeback starting in 1985 and experienced even greater success with album-oriented rock hits and hard-rock ballads into the 1990s.
Document 2: Car Seat Headrest: Car Seat Headrest is an American indie rock band originally from Leesburg, Virginia, United States, currently based in Seattle, Washington. Begun as a solo recording project in 2010 by Will Barnes (born August 23, 1992), known professionally as Will Toledo, Car Seat Headrest released 12 albums on the music platform Bandcamp. Signed to Matador Records in 2015, Car Seat Headrest began a tour in 2016 presenting material from their latest album "Teens of Denial" as a full band. Toledo's work is notable for its large online cult following. The group has received attention from publications including "Pitchfork", "Rolling Stone", "The New Yorker" and "Paste", amongst others.
Document 3: All We Have Left: All We Have Left is the second studio album and first major album by American rock band Boyce Avenue, released on June 15, 2010. The album's first single "Every Breath" was released digitally on March 16, 2010. The album reached No. 7 on Billboard Top Heatseekers chart in July 2010.
Document 4: 3 Peace Records: 3 Peace Records is an independent record label founded by Florida-based rock band Boyce Avenue. Founded in 2006 by the band members, they were approached by Universal Republic to partner in the release of the album. The band, impressed with Republic’s excitement about the music and the band’s wanting to remain extremely hands-on with their music, videos and websites, signed with Universal Republic in November 2009. The band’s major label debut album, "All We Have Left", released on June 15, 2010. However, on August 9, 2011, Boyce Avenue split with Universal Republic and returned to independent recording on 3 Peace. The label signed its second act, recording artist Hannah Trigwell, on October 14, 2012.
Document 5: The Joggers: The Joggers, formerly known as Stateside, are a four-piece band from Portland, Oregon. They play complex songs with elements of math rock which retain a pop sensibility. The guitar style of (lead singer and songwriter) Ben Whitesides and the second guitarist rejects a traditional rhythm & lead style for more scale exploration and includes elements of call and response. Murphy Kasiewicz played second guitar on "Solid Guild", but left the band before the recording of "With A Cape And A Cane" and was replaced by Dan Wilson (from Alaska) after that album, touring the US in support of it. Jake Morris has also played drums on tour with French Kicks and played drums for The Shaky Hands from December 2008 to March 2010. All members sing parts at various times, with unique and sometimes antique harmonies, and sometimes play various instruments. Ben Whitesides is the son of George M. Whitesides, one of the most decorated and wealthy chemists in the world.
Document 6: List of Heart band members: Heart is an American rock band that first found success in Canada and later in the United States and worldwide. Over the group's four-decade history it has had three primary lineups, with the constant center of the group since 1974 being sisters Ann Wilson (lead singer) and Nancy Wilson (guitarist). While it has been referred to as a duo because of the focus on leaders Ann and Nancy Wilson, Heart is a full rock group. In its original lineup the band had six members, then five in its second incarnation, and is again at six currently.
Document 7: Mathien: Mathien is a Midwestern funk rock band named after lead singer and guitarist Chris Mathien. Chris wrote, produced, and played all the parts on his first album "Head, Heart & Hands" (2007). To form a live band Chris met with bassist Mike Schiff and drummer Aaron Bouslog and formed the group in Carbondale, Illinois, at Southern Illinois University. They would later be joined by keyboardist George Jackson after relocating to Chicago, Illinois. Lee England Jr. on violin was also added as a guest for the recording of the album "Hello, Again" (2009). The band played a packed House of Blues in Chicago to kick off the album and tour. With songs like "Little Richard", "Dirt That I Do","Goodbye", "Remember" and "We Don't Need to Make Love, to Know That We've Got it" the band had built a strong fan base and played shows on a 2009–2010 tour. 2011 brought some changes with the band for the recording of "The Night I was an Alpha Male" (2011). George Jackson was out and Peter Wilkins joined the band on keyboards. They kicked off with an album release party at House of Blues again and toured in the Midwest. The band also broke into college radio playlists across the country; radio support came from North Central College WONC-FM in Naperville IL and Findlay College WLFC-FM in Findley, Ohio, and many others. The title track received heavy air play plus songs like "Jamie's Son", "Betaman", "Rub It In", "The Hold" and the huge crowd favorite "Lettuce Head". 2012 the band changed drummers and welcomed Omar Jahwar to the band, Mathien began a midwest tour during 2012 building a fan base at every show they played. Later that year Chris Mathien was on WONC-FM's Local Chaos radio show and said the band will be recording a new album for release in 2013.
Document 8: All You Ever Knew: "All You Ever Knew" is a metalcore song written and performed by American band Eyes Set to Kill. It was released on April 4, 2010 as the first single from their third studio album "Broken Frames". The song premiered in revolvermag.com and at their MySpace. The song is about Alexia's former relationships. No music video is released to date.
Document 9: A Different Light (album): A Different Light is the second full-length album by Sherwood, and it continues the band's musical style. The album contains several re-recorded versions of tracks off their "Summer EP" (2006), as well as new tracks that help the band drift into new musical territory. It is the first album since the band signed with MySpace Records, and was preceded by several 'Making of' videos available on the band's MySpace page. The song "The Best in Me" was used as the opening song for MTV's show "College Life".
Document 10: Weezer (2016 album): Weezer, also known as the White Album, is the eponymous tenth studio album by American rock band Weezer, released on April 1, 2016. The album marks their fourth self-titled release and their first produced by Jake Sinclair. It is the first release through Crush Music and was distributed by Atlantic Records.
Document 11: The Head and the Heart: The Head and the Heart is an American indie folk band. They were formed in the summer of 2009 by Josiah Johnson (vocals, guitar, percussion) and Jonathan Russell (vocals, guitar, percussion). The band also includes Charity Rose Thielen (violin, guitar, vocals), Chris Zasche (bass), Kenny Hensley (piano), and Tyler Williams (drums). The band is signed to Warner Bros. Records and have released three albums thus far. Since March 2016, Johnson has been on hiatus due to drug addiction-related issues. The band has toured in both North America and Europe.
Document 12: One More Light: One More Light is the seventh studio album by American rock band Linkin Park. It was released on May 19, 2017 through Warner Bros. Records and Machine Shop, following the 2014 album "The Hunting Party". The album's first single, "Heavy", was released on February 16, 2017. It is the band's first album to feature a title track, as they felt that the song "One More Light" was the heart of the album.
Document 13: Restless Heart: Restless Heart is an American country music band established in 1984. The band's longest-lasting lineup has consisted of Larry Stewart (lead vocals), John Dittrich (drums, background vocals), Paul Gregg (bass guitar, background vocals), Dave Innis (piano, keyboards, rhythm guitar, background vocals), and Greg Jennings (lead guitar, mandolin, background vocals). Verlon Thompson was the band's original lead singer, but he was replaced by Stewart before the band signed to RCA Records Nashville. Stewart departed for a solo career in 1992; during this time, Innis, Gregg, and Dittrich alternated as lead vocalists, until Innis also left. The band was on hiatus from 1994 to 1998. During this hiatus, Dittrich briefly recorded as one-third of The Buffalo Club, and Jennings joined Vince Gill's road band. Stewart, Gregg, Dittrich, and Jennings reunited briefly in 1998 to record new material for a greatest hits album; they, along with Innis, reunited again in 2004, and this lineup has remained ever since.
Document 14: All We Ever Knew: "All We Ever Knew" is a song written and recorded by American folk band The Head and the Heart, released as the lead single for their third studio album "Signs of Light" by Warner Bros. Records. The song was written by the band and produced by Jay Joyce.
Document 15: Signs of Light: Signs of Light is the third studio album by American band The Head and the Heart, and first album released through Warner Bros. Records. It was officially released on September 9, 2016. "All We Ever Knew" was released as the first single on June 3, 2016.
ground_truth: 2009