ity ▁du et ▁perform ers : ▁Jam iro qu ai ▁with ▁S ally ▁Ch at field ▁James ▁Bl unt ▁with ▁Andrew ▁Law son ▁IN X S ▁with ▁Al ti yan ▁Child s ▁Group ▁performance : ▁" D ynam ite " ▁and ▁" With ▁A ▁Little ▁Help ▁From ▁My ▁Fri ends " ▁– ▁performed ▁by ▁all ▁ 1 2 ▁final ists ▁▁ 2 2 ▁November ▁Group ▁performance : ▁" S weet ▁Ser end ip ity " ▁( per formed ▁by ▁S ally ▁Ch at field ▁and ▁Al ti yan ▁Child s ) ▁C ele br ity ▁perform ers : ▁Jam iro qu ai ▁(" White ▁Kn uck le ▁R ide "), ▁IN X S ▁(" New ▁S ens ation "), ▁James ▁Bl unt ▁(" St ay ▁the ▁Night ") ▁and ▁Guy ▁Sebastian ▁featuring ▁E ve ▁(" Who ' s ▁That ▁Girl ") ▁ ▁Re ception ▁ ▁Cont ro vers ies ▁On ▁ 1 8 ▁October ▁ 2 0 1 0 , ▁following ▁the ▁live ▁results ▁show , ▁contest ant ▁Al ti yan ▁Child s ▁disappeared ▁from ▁The ▁X ▁F actor ▁house ▁for ▁almost ▁ 2 4 ▁hours , ▁causing ▁a ▁serious ▁concern ▁for ▁his ▁ment or ▁Ke ating , ▁who ▁took ▁to ▁Twitter ▁to ▁try ▁to ▁locate ▁where ▁Child s ▁was . ▁Child s ▁later ▁returned ▁at ▁ 5   pm ▁the ▁next ▁day . ▁A ▁program ▁producer ▁said ▁that ▁he ▁had ▁" t aken ▁some ▁time ▁out ▁to ▁be ▁by ▁himself ▁and ▁sle pt ▁in ▁a ▁cave ▁on ▁Sydney ' s ▁northern ▁be