Recording for the album began in March 2008 and ended in April 2008. McTague said that the album, Lost in the Sound of Separation, would be considerably heavier than Define the Great Line. In October 2007, Underoath had begun filming their third person documentary Survive, Kaleidoscope. "The Audible Diversion Group", a small film team, shot footage of the band as they followed Underoath on their September tour and the entirety of the "We Believe in Dino-Tours". The film was shot in 720p high definition 16:9 widescreen format. Underoath released the Survive, Kaleidoscope live CD/DVD on May 27, 2008. The album reached No. 81 on the Billboard 200. The band recorded the concert footage at a performance in Philadelphia at the Electric Factory in October 2007. During mid-2008, Underoath joined the 30-city Rockstar Energy Mayhem Tour with bands such as Slipknot, Disturbed, Mastodon, and DragonForce. The tour began on July 9, 2008, and concluded in Buffalo, New York, on August 19, with Underoath headlining the tour's stop at the Hot Topic venue. After the release of Lost in the Sound of Separation on September 2, 2008, Underoath began headlining tour in support of the album, along with Saosin and The Devil Wears Prada, and in various markets, P.O.S, Person L, and The Famine. In its first week, Lost in the Sound of Separation debuted at No. 8 on the Billboard 200 charts, selling around 56,000 copies in the US alone. In December 2008, Underoath won Best Hardcore/Screamo Artist at the Rock on Request Awards and embarked on their first South American Tour. The band played six concerts in Brazil, Argentina, Chile and Colombia, and played at Warped Tour 2009. On international tours in 2009, Underoath began writing pieces of new songs for their fifth studio release. The songs "Desperate Times, Desperate Measures" and "Too Bright to See, Too Loud to Hear" were released as the two singles from the album. Departure of Aaron Gillespie and Ø (Disambiguation) (2010–2011) During a late 2009 interview, guitarist Timothy McTague stated that the band had "just started writing songs that may be included on the next record", and that they are hoping to enter the studio late summer or early fall 2010. Underoath is set to release their live album Live at Koko exclusively to their UK audience via their UK merchandise site. On February 25, 2010, Underoath stated they were finishing writing their new