▁band ▁coming ▁into ▁the ▁stage . ▁ ▁Cold play ▁were ▁accompanied ▁by ▁Ox f am ▁and ▁David ▁Gib bin ▁during ▁the ▁tour . ▁ ▁Vol unte ers ▁were ▁station ed ▁at ▁each ▁ven ue ▁to ▁tell ▁concert go ers ▁how ▁to ▁reduce ▁pover ty ; ▁the ▁organization ' s ▁logo ▁and ▁website ▁was ▁featured ▁on ▁one ▁of ▁the ▁light ▁ball ▁fi xt ures ▁during ▁each ▁concert . ▁ ▁On ▁ 2 3 ▁July ▁ 2 0 0 8 ▁Cold play ▁performed ▁their ▁second ▁in ▁two ▁shows ▁at ▁the ▁United ▁Center ▁ar ena ▁in ▁Chicago . ▁In ▁each ▁of ▁the ▁two ▁shows , ▁the ▁band ▁shot ▁the ▁music ▁video ▁for ▁" L ost !" ▁by ▁performing ▁the ▁song ▁twice . ▁On ▁ 1 9 ▁September ▁ 2 0 0 8 , ▁Chris ▁Martin ▁was ▁accompanied ▁by ▁A - ha ▁pian ist ▁Mag ne ▁Fur u hol men ▁in ▁the ▁encore ▁at ▁the ▁Os lo ▁Spe ktr um , ▁Os lo , ▁to ▁play ▁a ▁cover ▁of ▁the ▁A - Ha ▁song ▁" H un ting ▁High ▁and ▁Low ". ▁ ▁Visual s ▁The ▁intro ▁of ▁the ▁concert ▁would ▁begin ▁in ▁space ▁before ▁turning ▁to ▁show ▁the ▁Earth ▁and ▁zoom ing ▁to ▁aer ial ▁views ▁of ▁the ▁continent , ▁country , ▁city ▁and ▁then ▁stad ium ▁that ▁the ▁show ▁would ▁take ▁place . ▁The ▁idea ▁was ▁to ▁make ▁each ▁show ▁being ▁a ▁spect acle ▁in ▁its ▁own , ▁rather ▁than ▁just ▁part ▁of ▁the ▁tour . ▁The ▁cos mic ▁theme ▁is ▁repeated ▁across ▁a ▁number