▁with ▁many ▁artists . ▁ ▁His ▁vocals ▁also ▁appear ▁on ▁the ▁tracks ▁" K ings ▁of ▁Hollywood " ▁and ▁" You ' re ▁Not ▁Al one " ▁on ▁M x P x ' s ▁ 2 0 0 3 ▁release ▁Before ▁Everything ▁& ▁After . ▁ ▁He ▁also ▁does ▁backup ▁vocals ▁for ▁the ▁song ▁" Cat ▁Like ▁Th ief " ▁by ▁Box ▁Car ▁R ac er ▁along ▁with ▁Tim ▁Arm strong ▁of ▁R anc id . ▁ ▁Jordan ▁also ▁appears ▁on ▁the ▁Hope ▁After ▁the ▁End / A ▁St ab ▁In ▁The ▁Dark ▁split ▁EP ▁with ▁Ned ▁Harr ington . ▁In ▁ 2 0 0 4 , ▁he ▁appeared ▁on ▁the ▁Break d ance ▁Vietnam ▁song ▁" G ra ves ▁of ▁M ist akes " ▁from ▁the ▁album ▁Mem ories ▁of ▁Better ▁Days , ▁released ▁on ▁Bro ken ▁S ounds ▁Records . ▁ ▁Jordan ▁also ▁contributed ▁vocals ▁on ▁" You ' re ▁the ▁W ank er , ▁If ▁Anyone ▁Is " ▁by ▁Say ▁An yth ing ▁alongside ▁band mate ▁Ch ad ▁Gilbert . ▁ ▁Jordan ▁also ▁contributed ▁vocals ▁on ▁the ▁b - side ▁track ▁titled ▁" The ▁Lost ▁Boys " ▁by ▁Set ▁Your ▁Go als . ▁Jordan ▁is ▁also ▁featured ▁in ▁the ▁band ▁Mid town ' s ▁music ▁video ▁" Just ▁Rock ▁& ▁Roll ". ▁In ▁ 2 0 1 0 , ▁P und ik ▁collabor ated ▁with ▁Param ore ' s ▁Hay ley ▁Williams ▁and ▁Rel ient ▁K ' s ▁Eth an ▁L uck ▁for ▁a ▁punk ▁rock ▁cover ▁of ▁" The