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

Related documents: [0]  [DOC] 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. [END] 
[1]  [DOC] 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. [END]  
Answer: 2009
2009