Question: When was the second extended play of the American singer and songriter best known as the clean vocalist in post-hardcore band Dance Gavin Dance released?

Context articles: Whatever I Say Is Royal Ocean
Will Swan (musician)
Patient EP
Downtown Battle Mountain
Kurt Travis
Live at Bamboozle 2010 (Dance Gavin Dance album)
Tilian Pearson
Dance Gavin Dance (album)
Tree City Sessions
Happiness (Dance Gavin Dance album)

Whatever I Say Is Royal Ocean is the debut EP by American post-hardcore band Dance Gavin Dance.
 Released on November 14, 2006, the album was originally recorded over a six month period with producer Phil Devereux and was subsequently produced and mastered by Kris Crummett after the band signed to Rise Records.
Will Swan (born December 5, 1985) is an American musician, A&R, and guitarist.
 He is most prominently known as the lead guitarist and founder of post-hardcore band Dance Gavin Dance and as the founder of his record label Blue Swan Records.
 He is also the guitarist for the groups Sianvar and Secret Band.
 He is known occasionally as a rapper.
Patient is the second extended play (EP) by American singer and songwriter Tilian Pearson.
 It was released on September 1, 2017 on Vital Records.
Downtown Battle Mountain is the debut studio album by American post-hardcore band Dance Gavin Dance, released on May 15, 2007.
 According to an interview with vocalist Jonathan Mess, the album took its name from Battle Mountain, Nevada which the band visited while the album was being written.
 It was produced by Kris Crummett, who mastered their EP "Whatever I Say Is Royal Ocean".
 This was the last Dance Gavin Dance album to have Sean O'Sullivan on guitar, and the only full-length album to have Jonny Craig on vocals, until his rejoining in 2010.
Kurt Thomas Travis (born January 16, 1984) is an American singer, songwriter, and musician from Sacramento, California.
 He is best known as the former lead vocalist for the post-hardcore band Dance Gavin Dance.
 He joined A Lot Like Birds for four years.
 He is currently part of the musical trio Eternity Forever, and also the musical duo Push Over.
Live at Bamboozle 2010 is the first live album released by the post-hardcore band Dance Gavin Dance.
 The album was released on October 18, 2010 and features a live recording of the band's performance at the 2010 Bamboozle Left in Angel Stadium on March 27, 2010.
 The live performances reunites former vocalist at the time, Jonny Craig and Jon Mess.
Tilian Pearson (born July 12, 1987), also known mononymously as Tilian, is an American singer-songwriter, musician, and record producer born in Clearwater, Florida.
 He is best known as the clean vocalist in post-hardcore band Dance Gavin Dance.
Dance Gavin Dance (also referred to as "Death Star" due to the album cover) is the second studio album by American post-hardcore band Dance Gavin Dance.
 Self-described as "self-titled", it was released by Rise Records on August 19, 2008.
 The album sold 3,800 copies in its first week, after the band had distributed several songs over the MySpace social network: "Alex English", "Me and Zoloft Get Along Fine", "The Robot with Human Hair, Pt. 3" and "Caviar".
Tree City Sessions is the second live album by American post-hardcore band Dance Gavin Dance, released on May 13, 2016, through Rise Records.
Happiness is the third studio album by post-hardcore band Dance Gavin Dance.
 It was released by Rise Records on June 9, 2009.
 The band went into the studio with Kris Crummett to record the album on February 14, 2009.
 On April 10, they uploaded new artwork and a recording of the new song "Tree Village" onto their MySpace profile.
 On May 28, "Don't Tell Dave" was also added to their MySpace page with "NASA" being posted soon after on May 31.