 Pierre characterized Hoppus as both " very involved and not involved , " with his job as producer mainly giving notes on the sound of the instruments and offering suggestions to improve songs . Hoppus mostly worked with the band on arrangements , believing the songs were too packed and " needed to breathe " . Hoppus mentioned that label politics had hindered the creativity of Blink 's Take Off Your Pants and Jacket ( 2001 ) , and did not want to see the same fate befall the band . He was " meticulous " in his approach , partially due to the fact that it was his first production job . Hoppus was the one who advised the band to merge two previously unrelated songs — a slower , softer song and a pulsating drum track — into one , which became " Time Turned Fragile " . The frontman of Fall Out Boy , Patrick Stump , contributed guest vocals to " Everything Is Alright " , and Hoppus to " Hangman " . With production completed , Hoppus was very excited for the band that he felt was on the cusp of " great things " , recalling , " After six weeks of these guys living all together in two rooms of this house with a studio attached they created this amazingly beautiful and honest album . Justin 's lyrics are so brutally truthful . " The group completed recording in November 2004 , and judged final mixes over the interim months . Pierre later called Commit This to Memory his personal favorite album by the band . 
