guest vocals on "Grey Matter" and "Project Mayhem"; the group had met Palumbo at a Deftones show and had kept in contact with him, later asking him if he wanted to participate. The resulting product was predominantly described as emo and pop punk, although it occasionally was labeled hardcore punk or post-hardcore. The writing process for What It Is to Burn revolved around the group jamming. Linares said they could write some songs in two hours, and other times take a whole day. Collectively, Strohmeyer said it took a year to write all of the material on the album. Preceded by a music video for "Letters to You" in January 2002, What It Is to Burn was released on March 12 as a joint release between MCA and Drive-Thru Records, followed by a release in the UK on June 2. In an effort to promote the record, the group toured extensively. They began shortly after the album's release by touring with Moth. In April and May, the group went on tour with Brand New and The Starting Line. Following this, the group went on a UK tour with New Found Glory. Between late June and mid-August, the group performed on Warped Tour as part of the Drive-Thru Records Stage. In late August, the group performed at the Reading and Leeds Festivals in the UK. In September, the group performed a few shows in Japan. In October and November, the band went tour across the US alongside New Found Glory, Something Corporate and Further Seems Forever. In November and December, the group went on a UK tour with From Autumn to Ashes and Coheed and Cambria. The band continued touring with From Autumn to Ashes across the US in January and February. Allister were initially planned to support, but they were later replaced by Steel Train. In February, the band went on a co-heading US tour with The Used. Following this, the group continued touring with The Movielife, Senses Fail and A Static Lullaby until early March. In March, the group went on a tour of the UK with Brand New. In April, the group performed at Skate and Surf Fest. In early May, the band performed as a special guest at two shows of MTV's Campus Invasion tour. In June, the band appeared on Jimmy Kimmel Live! and performed at KROQ's Weenie Roast festival. In early July, the group appeared