▁height ▁of ▁their ▁success ▁in ▁the ▁mid - to - late ▁ 1 9 8 0 s . ▁Songs ▁like ▁" N ú cle o ▁Base ", ▁" Fl ores ▁em ▁V oc ê " ▁and ▁" En vel he ço ▁na ▁C idade " ▁were ▁huge ▁hits ▁when ▁first ▁released ▁and ▁still ▁enjoy ▁considerable ▁air play ▁in ▁radio ▁stations ▁throughout ▁Brazil . ▁The ▁band ▁had ▁a ▁decl ine ▁in ▁product ivity ▁and ▁popular ity ▁during ▁the ▁ 1 9 9 0 s , ▁but ▁reg ained ▁popular ity ▁after ▁playing ▁before ▁an ▁audience ▁of ▁over ▁ 2 5 0 , 0 0 0 ▁at ▁the ▁third ▁edition ▁of ▁the ▁Rock ▁in ▁Rio ▁festival ▁in ▁ 2 0 0 1 ▁and ▁doing ▁an ▁ac oust ic ▁special ▁for ▁MTV ▁Brasil ▁in ▁ 2 0 0 4 . ▁▁ 2 0 0 7 : ▁In ternal ▁Conf lic ts ▁and ▁Split ▁▁ ▁In ▁September ▁ 2 0 0 7 , ▁just ▁before ▁the ▁band ▁were ▁due ▁to ▁have ▁a ▁break , ▁N asi ▁depart ed ▁from ▁the ▁band ▁after ▁a ▁conflict ▁with ▁Air ton ▁Val ad ão ▁Rod ol fo , ▁who ▁was ▁the ▁band ▁manager ▁and ▁also ▁N asi ' s ▁brother . ▁ ▁In ▁November ▁ 2 0 0 7 , ▁Ed g ard ▁Sc and ur ra ▁announced ▁that ▁Ira ! ▁had ▁split ▁up ▁and ▁the ▁remaining ▁members ▁would ▁follow ▁their ▁care ers ▁separately . ▁▁ 2 0 1 4 : ▁Re union ▁▁ ▁On ▁ 2 7 ▁June ▁ 2